diff --git a/glibc.spec b/glibc.spec
index 553f8a403b3f18cdd49901d697e61374dad3344d..79b24d2b29c013c21b8e6d364b0742316daa444f 100644
--- a/glibc.spec
+++ b/glibc.spec
@@ -67,7 +67,7 @@
 ##############################################################################
 Name: 	 	glibc
 Version: 	2.38
-Release: 	81
+Release: 	82
 Summary: 	The GNU libc libraries
 License:	%{all_license}
 URL: 		http://www.gnu.org/software/glibc/
@@ -371,6 +371,7 @@ Patch281: x86-fix-wmemset-ifunc-stray-bug-33542.patch
 Patch282: backport-x86-Disable-AVX-Fast-Unaligned-Load-on-Hygon-1-2-3.patch
 Patch283: backport-Set-Prefer_No_AVX512-flag-for-hygon-platform.patch
 Patch284: AArch64-Optimise-SVE-scalar-callbacks.patch
+Patch285: ppc64le-Power-10-rawmemchr-clobbers-v20-bug-33091.patch
 
 #openEuler patch list
 Patch9000: locale-delete-no-hard-link-to-avoid-all_language-pac.patch
@@ -1604,6 +1605,9 @@ fi
 %endif
 
 %changelog
+* Fri Nov 28 2025 Qingqing Li <liqingqing3@huawei.com> - 2.38-82
+- ppc64le: Power 10 rawmemchr clobbers v20 (bug #33091)
+
 * Thu Nov 20 2025 zhangjian <zhangjian496@huawei.com> - 2.38-81
 - delete align for align_loop
 
diff --git a/ppc64le-Power-10-rawmemchr-clobbers-v20-bug-33091.patch b/ppc64le-Power-10-rawmemchr-clobbers-v20-bug-33091.patch
new file mode 100644
index 0000000000000000000000000000000000000000..e2868bc320ee2ceb954f9a4ef76bfe703ae6390b
--- /dev/null
+++ b/ppc64le-Power-10-rawmemchr-clobbers-v20-bug-33091.patch
@@ -0,0 +1,30 @@
+From a965fb342e3202ca3547878d511491064f4d284f Mon Sep 17 00:00:00 2001
+From: Sachin Monga <smonga@linux.ibm.com>
+Date: Thu, 27 Nov 2025 11:10:01 -0500
+Subject: [PATCH] ppc64le: Power 10 rawmemchr clobbers v20 (bug #33091)
+
+Replace non-volatile(v20) by volatile(v17)
+since v20 is not restored
+
+Reviewed-by: Peter Bergner <bergner@tenstorrent.com>
+(cherry picked from commit b59799f14f97f697c3a36b4380bd4ce2fbe65f11)
+---
+ sysdeps/powerpc/powerpc64/le/power10/strlen.S | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/sysdeps/powerpc/powerpc64/le/power10/strlen.S b/sysdeps/powerpc/powerpc64/le/power10/strlen.S
+index 709bde6504..6c5130071c 100644
+--- a/sysdeps/powerpc/powerpc64/le/power10/strlen.S
++++ b/sysdeps/powerpc/powerpc64/le/power10/strlen.S
+@@ -31,7 +31,7 @@
+ #  define FUNCNAME RAWMEMCHR
+ # endif
+ # define MCOUNT_NARGS 2
+-# define VREG_ZERO v20
++# define VREG_ZERO v17
+ # define OFF_START_LOOP 256
+ # define RAWMEMCHR_SUBTRACT_VECTORS \
+ 	vsububm   v4,v4,v18;	    \
+-- 
+2.27.0
+