diff --git a/backport-Use-O_CLOEXEC-in-sysconf-BZ-26791.patch b/backport-Use-O_CLOEXEC-in-sysconf-BZ-26791.patch
new file mode 100644
index 0000000000000000000000000000000000000000..fb913cd7088bf36443912f263c7df9ebce79f659
--- /dev/null
+++ b/backport-Use-O_CLOEXEC-in-sysconf-BZ-26791.patch
@@ -0,0 +1,27 @@
+From d2d714b9fc02e4710d6dc769d8ec2c9dab0eb69a Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Maximilian=20Kr=C3=BCger?= <max@maxfragg.de>
+Date: Wed, 11 Nov 2020 11:21:30 +0100
+Subject: [PATCH] Use O_CLOEXEC in sysconf [BZ #26791]
+
+If sysconf is used in multithreaded processes, various filedescriptors
+may leak due to missing O_CLOEXEC.  This commit adds the flag.
+---
+ sysdeps/unix/sysv/linux/sysconf.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/sysdeps/unix/sysv/linux/sysconf.c b/sysdeps/unix/sysv/linux/sysconf.c
+index 7958a74164..9c5a4cb1a4 100644
+--- a/sysdeps/unix/sysv/linux/sysconf.c
++++ b/sysdeps/unix/sysv/linux/sysconf.c
+@@ -81,7 +81,7 @@ __sysconf (int name)
+ 
+   if (procfname != NULL)
+     {
+-      int fd = __open_nocancel (procfname, O_RDONLY);
++      int fd = __open_nocancel (procfname, O_RDONLY | O_CLOEXEC);
+       if (fd != -1)
+ 	{
+ 	  /* This is more than enough, the file contains a single integer.  */
+-- 
+2.19.1
+
diff --git a/backport-aarch64-Add-unwind-information-to-_start-bug-26853.patch b/backport-aarch64-Add-unwind-information-to-_start-bug-26853.patch
new file mode 100644
index 0000000000000000000000000000000000000000..6cc49141ad6ad6d58d6172b764bb3358a37329a5
--- /dev/null
+++ b/backport-aarch64-Add-unwind-information-to-_start-bug-26853.patch
@@ -0,0 +1,41 @@
+From 5edf3d9fd6efe06fda37b2a460e60690a90457a4 Mon Sep 17 00:00:00 2001
+From: Florian Weimer <fweimer@redhat.com>
+Date: Mon, 9 Nov 2020 11:31:04 +0100
+Subject: [PATCH] aarch64: Add unwind information to _start (bug 26853)
+
+This adds CFI directives which communicate that the stack ends
+with this function.
+
+Fixes bug 26853.
+---
+ sysdeps/aarch64/start.S | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/sysdeps/aarch64/start.S b/sysdeps/aarch64/start.S
+index bad000f5..5360689c 100644
+--- a/sysdeps/aarch64/start.S
++++ b/sysdeps/aarch64/start.S
+@@ -43,10 +43,9 @@
+  */
+ 
+ 	.text
+-	.globl _start
+-	.type _start,#function
+-_start:
++ENTRY(_start)
+ 	/* Create an initial frame with 0 LR and FP */
++	cfi_undefined(x30)
+ 	mov	x29, #0
+ 	mov	x30, #0
+ 
+@@ -102,6 +101,7 @@ _start:
+ __wrap_main:
+ 	b	main
+ #endif
++END(_start)
+ 
+ 	/* Define a symbol for the first piece of initialized data.  */
+ 	.data
+-- 
+2.23.0
+
diff --git a/glibc.spec b/glibc.spec
index f01fff70b4d30a35b983708475a390c42c6967b1..9204a744722a62ffe42897fd8d9204d280501a34 100644
--- a/glibc.spec
+++ b/glibc.spec
@@ -59,7 +59,7 @@
 ##############################################################################
 Name: 	 	glibc
 Version: 	2.28
-Release: 	50
+Release: 	51
 Summary: 	The GNU libc libraries
 License:	%{all_license}
 URL: 		http://www.gnu.org/software/glibc/
@@ -105,6 +105,8 @@ Patch28: backport-aarch64-fix-stack-missing-after-sp-is-updated.patch
 Patch29: backport-aarch64-push-the-set-of-rules-before-falling-into-sl.patch
 Patch30: backport-Fix-buffer-overrun-in-EUC-KR-conversion-module-bz-24.patch
 Patch31: backport-addmntent-Remove-unbounded-alloca-usage-from-getmnte.patch
+Patch32: backport-Use-O_CLOEXEC-in-sysconf-BZ-26791.patch
+Patch33: backport-aarch64-Add-unwind-information-to-_start-bug-26853.patch
 
 Provides: ldconfig rtld(GNU_HASH) bundled(gnulib)
 
@@ -1100,6 +1102,12 @@ fi
 %doc hesiod/README.hesiod
 
 %changelog
+* Thu Jan 7 2021 Qingqing Li<liqingqing3@huawei.com> - 2.28-51
+- Fix bug 26791: Use O_CLOEXEC in sysconf
+  bugzilla link: https://sourceware.org/bugzilla/show_bug.cgi?id=26791
+- Fix bug 26853: aarch64: Add unwind information to _start
+  bugzilla link: https://sourceware.org/bugzilla/show_bug.cgi?id=26853
+
 * Wed Jan 6 2021 Wang Shuo<wangshuo_1994@foxmail.com> - 2.28-50
 - Fix stack missing in _dl_tlsdesc_dynamic
   Fix buffer overrun in EUC-KR conversion module (bz #24973)