From e1f7b3d1e350761b032b3f0252a326dc5ef2b28b Mon Sep 17 00:00:00 2001
From: Packit Service <user-cont-team+packit-service@redhat.com>
Date: Apr 16 2021 22:38:44 +0000
Subject: Apply patch glibc-rh1936864.patch


patch_name: glibc-rh1936864.patch
present_in_specfile: true
location_in_specfile: 542

---

diff --git a/posix/regexec.c b/posix/regexec.c
index 73644c2..06b8487 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -1289,8 +1289,10 @@ proceed_next_node (const re_match_context_t *mctx, Idx nregs, regmatch_t *regs,
 	      else if (naccepted)
 		{
 		  char *buf = (char *) re_string_get_buffer (&mctx->input);
-		  if (memcmp (buf + regs[subexp_idx].rm_so, buf + *pidx,
-			      naccepted) != 0)
+		  if (mctx->input.valid_len - *pidx < naccepted
+		      || (memcmp (buf + regs[subexp_idx].rm_so, buf + *pidx,
+				  naccepted)
+			  != 0))
 		    return -1;
 		}
 	    }