ffmpeg | branch: master | Michael Niedermayer <michae...@gmx.at> | Tue Nov 11 03:34:58 2014 +0100| [48efe9ec86acf6dcf6aabef2114f8dd04e4fbce4] | committer: Michael Niedermayer
avcodec/utvideodec: Fix undefined behavior in shift Fixes: asan_heap-oob_2573085_3783_utvideo_rgba_median.avi Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michae...@gmx.at> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=48efe9ec86acf6dcf6aabef2114f8dd04e4fbce4 --- libavcodec/utvideodec.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/libavcodec/utvideodec.c b/libavcodec/utvideodec.c index 05c943f..b565c10 100644 --- a/libavcodec/utvideodec.c +++ b/libavcodec/utvideodec.c @@ -56,13 +56,14 @@ static int build_huff(const uint8_t *src, VLC *vlc, int *fsym) *fsym = he[0].sym; return 0; } - if (he[0].len > 32) - return -1; last = 255; while (he[last].len == 255 && last) last--; + if (he[last].len > 32) + return -1; + code = 1; for (i = last; i >= 0; i--) { codes[i] = code >> (32 - he[i].len); _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
