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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-01-24 16:13:05 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-01-24 17:50:03 +0100 |
| commit | 755933cb5cd17decd1838d3d64e07d4157de5638 (patch) | |
| tree | 9b5edbf4d1499794f107c3e7b775e9ee7b023377 | |
| parent | 8504d64bcbd1c25d4c91eb75af3f4a79a641854e (diff) | |
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>
| -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 e0b22ec948..7d17e3dfcb 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -1082,6 +1082,10 @@ 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; |