From: Ulrich Drepper <drepper@redhat.com>
Date: Sun, 23 Aug 2009 22:22:00 +0000 (-0700)
Subject: Recognize ill-formed { } expressions in regcomp.
X-Git-Tag: glibc-2.10.2~23
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03cb6a1e3939a039bcd53bf862fa93f487e35488;p=thirdparty%2Fglibc.git

Recognize ill-formed { } expressions in regcomp.

(cherry picked from commit 52db8039f54672abe6a6da5fb107fa52aca42547)
---

diff --git a/ChangeLog b/ChangeLog
index e7c80bea119..876e0e8c393 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2009-08-23  Ulrich Drepper  <drepper@redhat.com>
 
+	* posix/regcomp.c (parse_dup_op): Verify the expression is correctly
+	terminated.
+
 	* posix/unistd.h: Define _POSIX_VERSION and _POSIX2_* correctly if
 	older POSIX versions are selected.
 
diff --git a/posix/regcomp.c b/posix/regcomp.c
index 4843cfea339..446fed54458 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -2481,7 +2481,7 @@ parse_dup_op (bin_tree_t *elem, re_string_t *regexp, re_dfa_t *dfa,
 	  return elem;
 	}
 
-      if (BE (end != -1 && start > end, 0))
+      if (BE ((end != -1 && start > end) || token->type != OP_CLOSE_DUP_NUM, 0))
 	{
 	  /* First number greater than second.  */
 	  *err = REG_BADBR;