ffmpeg | branch: release/2.4 | Michael Niedermayer <michae...@gmx.at> | Wed Feb 25 12:29:10 2015 +0100| [ca663f79e95fb03431dadb198ae1b97fe1f667e3] | committer: Michael Niedermayer
avcodec/zmbv: Check len before reading in decode_frame() Fixes out of array read Fixes: asan_heap-oob_4d4eb0_3994_cov_3169972261_zmbv_15bit.avi Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michae...@gmx.at> (cherry picked from commit 1f5c7781e63d6519192ada59c1e36bcecc92791d) Signed-off-by: Michael Niedermayer <michae...@gmx.at> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ca663f79e95fb03431dadb198ae1b97fe1f667e3 --- libavcodec/zmbv.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/zmbv.c b/libavcodec/zmbv.c index c16d912..82ae169 100644 --- a/libavcodec/zmbv.c +++ b/libavcodec/zmbv.c @@ -410,11 +410,16 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPac int hi_ver, lo_ver, ret; /* parse header */ + if (len < 1) + return AVERROR_INVALIDDATA; c->flags = buf[0]; buf++; len--; if (c->flags & ZMBV_KEYFRAME) { void *decode_intra = NULL; c->decode_intra= NULL; + + if (len < 6) + return AVERROR_INVALIDDATA; hi_ver = buf[0]; lo_ver = buf[1]; c->comp = buf[2]; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
