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Description: Fix buffer overflow for forward reference within backward assertion with excess closing parenthesis.
Strictly, this is a backport, but the patch is trivial.
Origin: upstream http://vcs.pcre.org/pcre?view=revision&revision=1571
Bug: https://bugs.exim.org/show_bug.cgi?id=1651
Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=790000
Last-Update: 2015-06-26
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
Index: b/pcre_compile.c
===================================================================
--- a/pcre_compile.c 2015-05-26 08:24:55.000000000 +0100
+++ b/pcre_compile.c 2015-06-26 08:00:13.000000000 +0100
@@ -9265,7 +9265,7 @@
exceptional ones forgo this. We scan the pattern to check that they are fixed
length, and set their lengths. */
-if (cd->check_lookbehind)
+if (errorcode == 0 && cd->check_lookbehind)
{
pcre_uchar *cc = (pcre_uchar *)codestart;
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