update to glibc-2.28-251.2.src.rpm

Signed-off-by: Zhao Hang <wb-zh951434@alibaba-inc.com>

glibc-RHEL-15696-53.patch

@@ -0,0 +1,41 @@
+From 7e08db3359c86c94918feb33a1182cd0ff3bb10b Mon Sep 17 00:00:00 2001
+From: Noah Goldstein <goldstein.w.n@gmail.com>
+Date: Sun, 9 Jan 2022 16:02:28 -0600
+Subject: [PATCH] x86: Fix __wcsncmp_evex in strcmp-evex.S [BZ# 28755]
+Content-type: text/plain; charset=UTF-8
+
+Fixes [BZ# 28755] for wcsncmp by redirecting length >= 2^56 to
+__wcscmp_evex. For x86_64 this covers the entire address range so any
+length larger could not possibly be used to bound `s1` or `s2`.
+
+test-strcmp, test-strncmp, test-wcscmp, and test-wcsncmp all pass.
+
+Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
+---
+ sysdeps/x86_64/multiarch/strcmp-evex.S | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/sysdeps/x86_64/multiarch/strcmp-evex.S b/sysdeps/x86_64/multiarch/strcmp-evex.S
+index 459eeed0..d5aa6daa 100644
+--- a/sysdeps/x86_64/multiarch/strcmp-evex.S
++++ b/sysdeps/x86_64/multiarch/strcmp-evex.S
+@@ -97,6 +97,16 @@ ENTRY (STRCMP)
+ 	je	L(char0)
+ 	jb	L(zero)
+ #  ifdef USE_AS_WCSCMP
++#  ifndef __ILP32__
++	movq	%rdx, %rcx
++	/* Check if length could overflow when multiplied by
++	   sizeof(wchar_t). Checking top 8 bits will cover all potential
++	   overflow cases as well as redirect cases where its impossible to
++	   length to bound a valid memory region. In these cases just use
++	   'wcscmp'.  */
++	shrq	$56, %rcx
++	jnz	__wcscmp_evex
++#  endif
+ 	/* Convert units: from wide to byte char.  */
+ 	shl	$2, %RDX_LP
+ #  endif
+-- 
+GitLab
+