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author | Michael Niedermayer <michael@niedermayer.cc> | 2017-01-24 16:13:05 +0100 |
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committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-02-03 15:59:14 +0100 |
commit | 02323b1d025cd54373c614c1020e35e51f06eba5 (patch) | |
tree | 7994099741eeee258c58d7bda2dd6e87c1b8253e | |
parent | 99c78466ff27311b2a06d874cb7bbd8b1cefc597 (diff) | |
download | ffmpeg-02323b1d025cd54373c614c1020e35e51f06eba5.tar.gz |
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 <michael@niedermayer.cc>
(cherry picked from commit 755933cb5cd17decd1838d3d64e07d4157de5638)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r-- | libavcodec/mjpegdec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index 094fc47f31..f065cdad87 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; |