ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Sun Aug 3 19:24:18 2014 +0100| [70cd3b8e659c3522eea5c16a65d14b8658894a94] | committer: Anton Khirnov
mmvideo: check horizontal coordinate too Fixes out of array accesses. Bug-Id: CVE-2013-3672 Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Vittorio Giovara <[email protected]> Signed-off-by: Anton Khirnov <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=70cd3b8e659c3522eea5c16a65d14b8658894a94 --- libavcodec/mmvideo.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/mmvideo.c b/libavcodec/mmvideo.c index abec2e8..d80c832 100644 --- a/libavcodec/mmvideo.c +++ b/libavcodec/mmvideo.c @@ -154,6 +154,8 @@ static int mm_decode_inter(MmContext * s, int half_horiz, int half_vert) int replace_array = bytestream2_get_byte(&s->gb); for(j=0; j<8; j++) { int replace = (replace_array >> (7-j)) & 1; + if (x + half_horiz >= s->avctx->width) + return AVERROR_INVALIDDATA; if (replace) { int color = bytestream2_get_byte(&data_ptr); s->frame->data[0][y*s->frame->linesize[0] + x] = color; _______________________________________________ ffmpeg-cvslog mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
