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erlang.7558
0003-Fix-heap-overflow-with-unmatched-closing-p...
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File 0003-Fix-heap-overflow-with-unmatched-closing-parens.patch of Package erlang.7558
From 498cf26aecb4f471a269e6fb562d2a9820fd6145 Mon Sep 17 00:00:00 2001 From: Zephyr Pellerin <zv@nxvr.org> Date: Sat, 18 Jun 2016 16:13:54 -0700 Subject: [PATCH 3/3] Fix heap overflow with unmatched closing parens This bug can trigger vulnerable code in find_fixedlength for forward reference within backward assertion with excess closing parenthesis. --- erts/emulator/pcre/pcre_compile.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/erts/emulator/pcre/pcre_compile.c b/erts/emulator/pcre/pcre_compile.c index e422e54f73..7050e2e6c2 100644 --- a/erts/emulator/pcre/pcre_compile.c +++ b/erts/emulator/pcre/pcre_compile.c @@ -8260,7 +8260,7 @@ OP_RECURSE that are not fixed length get a diagnosic with a useful offset. The 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; -- 2.13.6
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