In the Linux kernel, the following vulnerability has been resolved:tcp: Correct signedness in skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, if an skb exists at the tail of the write queue, thekernel will attempt to append the new data to that skb. However, the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to C s type promotion rules, the signed size_goal is converted to anunsigned int to match skb->len before the subtraction. The result is anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GB of data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction will result in copy holding avery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has been resolved:tcp: Correct signedness in skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, if an skb exists at the tail of the write queue, thekernel will attempt to append the new data to that skb. However, the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to C s type promotion rules, the signed size_goal is converted to anunsigned int to match skb->len before the subtraction. The result is anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GB of data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction will result in copy holding avery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has been resolved:tcp: Correct signedness in skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, if an skb exists at the tail of the write queue, thekernel will attempt to append the new data to that skb. However, the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to C s type promotion rules, the signed size_goal is converted to anunsigned int to match skb->len before the subtraction. The result is anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GB of data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction will result in copy holding avery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has been resolved:tcp: Correct signedness in skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, if an skb exists at the tail of the write queue, thekernel will attempt to append the new data to that skb. However, the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to C s type promotion rules, the signed size_goal is converted to anunsigned int to match skb->len before the subtraction. The result is anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GB of data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction will result in copy holding avery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has been resolved:tcp: Correct signedness in skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, if an skb exists at the tail of the write queue, thekernel will attempt to append the new data to that skb. However, the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to C s type promotion rules, the signed size_goal is converted to anunsigned int to match skb->len before the subtraction. The result is anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GB of data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction will result in copy holding avery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has been resolved:tcp: Correct signedness in skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, if an skb exists at the tail of the write queue, thekernel will attempt to append the new data to that skb. However, the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to C s type promotion rules, the signed size_goal is converted to anunsigned int to match skb->len before the subtraction. The result is anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GB of data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction will result in copy holding avery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to a unknown weakness. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Impacted is confidentiality, integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or 6.16-rc6 eliminates this vulnerability. Applying the patch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.
A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to a unknown weakness. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Impacted is confidentiality, integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or 6.16-rc6 eliminates this vulnerability. Applying the patch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.
A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to a unknown weakness. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Impacted is confidentiality, integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or 6.16-rc6 eliminates this vulnerability. Applying the patch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.
A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to a unknown weakness. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Impacted is confidentiality, integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or 6.16-rc6 eliminates this vulnerability. Applying the patch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
In the Linux kernel, the following vulnerability has beenresolved:tcp:Correct signednessin skb remaining space calculationSyzkaller reported a bug [1] where sk->sk_forward_alloc can overflow.When we send data, ifan skb exists at the tail of the write queue, thekernel will attemptto append the new data to that skb. However,the codethat checks for available space in the skb is flawed: copy = size_goal - skb->len The types of the variables involved are: copy: ssize_t (s64 on 64-bit systems)size_goal: intskb->len: unsigned int Due to Cs type promotion rules, the signed size_goal is converted to anunsigned intto matchskb->len beforethe subtraction. The resultis anunsigned int.When this unsigned int result is then assigned to the s64 copy variable,it is zero-extended, preserving its non-negative value. Consequently, copyis always >= 0.Assume we are sending 2GBof data and size_goal has been adjusted to avalue smaller than skb->len. The subtraction willresult in copy holdingavery large positive integer. In the subsequent logic, this large value isused to update sk->sk_forward_alloc, which can easily cause it to overflow.The syzkaller reproducer uses TCP_REPAIR to reliably create thiscondition. However, this can also occur in real-world scenarios. Thetcp_bound_to_half_wnd() function can also reduce size_goal to a smallvalue. This would cause the subsequent tcp_wmem_schedule() to setsk->sk_forward_alloc to a value close to INT_MAX. Further memoryallocation requests would then cause sk_forward_alloc to wrap around andbecome negative.[1]: https://syzkaller.appspot.com/bug?extid=de6565462ab540f50e47
A vulnerability, which was classified as problematic, hasbeen found inLinux Kernel up to6.6.98/6.12.38/6.15.6/6.16-rc5 (Operating System).The manipulation of the argument involved with an unknown input leads to aunknown weakness. Using CWE to declare the problem leads to CWE-770.The product allocates a reusable resource orgroup of resources on behalf of an actor without imposing anyrestrictions on the size or number of resources that can be allocated, inviolation of the intended security policy for that actor.Impacted is confidentiality,integrity, and availability.Upgrading to version 6.6.99, 6.12.39, 6.15.7 or6.16-rc6eliminates thisvulnerability. Applying thepatch 81373cd1d72d87c7d844d4454a526b8f53e72d00/62e6160cfb5514787bda833d466509edc38fde23/9f164fa6bb09fbcc60fa5c3ff551ce9eec1befd7/d3a5f2871adc0c61c61869f37f3e697d97f03d8c is able to eliminate this problem.The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggestedto be upgrading to thelatest version.
