ffmpeg | branch: release/2.8 | Michael Niedermayer <mich...@niedermayer.cc> | Tue Jan 24 16:13:05 2017 +0100| [9f2e4c26a0ed88177cfc6d8a944a38395c6efdb8] | committer: Michael Niedermayer
avcodec/mjpegdec: Check remaining bitstream in ljpeg_decode_yuv_scan() Fixes timeout Fixes: 445/fuzz-3-ffmpeg_VIDEO_AV_CODEC_ID_MJPEG_fuzzer Fixes: 456/fuzz-2-ffmpeg_VIDEO_AV_CODEC_ID_JPEGLS_fuzzer Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 755933cb5cd17decd1838d3d64e07d4157de5638) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9f2e4c26a0ed88177cfc6d8a944a38395c6efdb8 --- libavcodec/mjpegdec.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index 6587931..e4fdf02 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -1076,6 +1076,10 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, for (mb_y = 0; mb_y < s->mb_height; mb_y++) { for (mb_x = 0; mb_x < s->mb_width; mb_x++) { + if (get_bits_left(&s->gb) < 1) { + av_log(s->avctx, AV_LOG_ERROR, "bitstream end in yuv_scan\n"); + return AVERROR_INVALIDDATA; + } if (s->restart_interval && !s->restart_count){ s->restart_count = s->restart_interval; resync_mb_x = mb_x; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
