diff --git a/backport-fix-a-possible-integer-overflow-in-DFA-matching-305.patch b/backport-fix-a-possible-integer-overflow-in-DFA-matching-305.patch
new file mode 100644
index 0000000000000000000000000000000000000000..0441a0f022b03ff6d025a7b96204c90977a280e3
--- /dev/null
+++ b/backport-fix-a-possible-integer-overflow-in-DFA-matching-305.patch
@@ -0,0 +1,24 @@
+From d231944236c6516de2831cbdde3069dab180ae81 Mon Sep 17 00:00:00 2001
+From: pkuzco <b.naamneh@gmail.com>
+Date: Mon, 9 Oct 2023 17:46:42 +0200
+Subject: [PATCH] fix a possible integer overflow in DFA matching (#305)
+ 
+---
+ src/pcre2_dfa_match.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+ 
+diff --git a/src/pcre2_dfa_match.c b/src/pcre2_dfa_match.c
+index 518ac07..13b1ae4 100644
+--- a/src/pcre2_dfa_match.c
++++ b/src/pcre2_dfa_match.c
+@@ -428,7 +428,7 @@ overflow. */
+ 
+ else
+   {
+-  uint32_t newsize = (rws->size >= UINT32_MAX/2)? UINT32_MAX/2 : rws->size * 2;
++  uint32_t newsize = (rws->size >= UINT32_MAX/(sizeof(int)*2))? UINT32_MAX/sizeof(int) : rws->size * 2;
+   uint32_t newsizeK = newsize/(1024/sizeof(int));
+ 
+   if (newsizeK + mb->heap_used > mb->heap_limit)
+-- 
+2.33.0
\ No newline at end of file
diff --git a/pcre2.spec b/pcre2.spec
index 925a8fd422a3c2318428b9cc7938aed291921b75..eff4b081519f36aa3bcc342e407d1e3a8cd2bc76 100644
--- a/pcre2.spec
+++ b/pcre2.spec
@@ -1,6 +1,6 @@
 Name:        pcre2
 Version:     10.42
-Release:     2
+Release:     3
 Summary:     Perl Compatible Regular Expressions
 License:     BSD
 URL:         http://www.pcre.org/
@@ -8,10 +8,11 @@ Source0:     https://github.com/PCRE2Project/pcre2/releases/download/%{name}-%{v
 
 # Do no set RPATH if libdir is not /usr/lib
 Patch6000:     backport-pcre2-10.10-Fix-multilib.patch
-Patch6019:     backport-no-partial-match-if-trailing-data-is-invalid-utf-238.patch
-Patch6020:     backport-Fix-an-invalid-match-of-ascii-word-classes-when-inva.patch
-Patch6021:     backport-fix-wrong-test.patch
-Patch6030:     sljit-sv48-sv57.patch
+Patch6001:     backport-no-partial-match-if-trailing-data-is-invalid-utf-238.patch
+Patch6002:     backport-Fix-an-invalid-match-of-ascii-word-classes-when-inva.patch
+Patch6003:     backport-fix-wrong-test.patch
+Patch6004:     sljit-sv48-sv57.patch
+Patch6005:     backport-fix-a-possible-integer-overflow-in-DFA-matching-305.patch
 
 BuildRequires:  autoconf libtool automake coreutils gcc make readline-devel
 Obsoletes:      pcre2-utf16 pcre2-utf32 pcre2-tools
@@ -128,6 +129,9 @@ make check
 %{_pkgdocdir}/html/
 
 %changelog
+* Thu Dec 14 2023 xujing <xujing125@huawei.com> - 10.42-3
++- DESC:fix a possible integer overflow in DFA matching (#305)
+
 * Mon Dec 04 2023 Jingwiw  <wangjingwei@iscas.ac.cn> - 10.42-2
 - enable riscv jit and fix error for sv48-sv57