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openSUSE:Evergreen:11.1
ft2demos
bnc485889-overflow2.patch
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File bnc485889-overflow2.patch of Package ft2demos
From 0a05ba257b6ddd87dacf8d54b626e4b360e0a596 Mon Sep 17 00:00:00 2001 From: Werner Lemberg <wl@gnu.org> Date: Fri, 20 Mar 2009 06:19:45 +0000 Subject: Protect against malformed compressed data. Problem reported by Tavis Ormandy <taviso@google.com>. * src/lsw/ftzopen.c (ft_lzwstate_io): Test whether `state->prefix' is zero. --- diff --git a/src/lzw/ftzopen.c b/src/lzw/ftzopen.c index fc78315..c0483de 100644 --- a/src/lzw/ftzopen.c +++ b/src/lzw/ftzopen.c @@ -332,6 +332,9 @@ while ( code >= 256U ) { + if ( !state->prefix ) + goto Eof; + FTLZW_STACK_PUSH( state->suffix[code - 256] ); code = state->prefix[code - 256]; } -- cgit v0.8.2
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