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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-01-24 16:13:05 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-08-23 13:15:16 +0200 |
| commit | 4445b614fa8104e25a5da647337a586c6a6ea6e3 (patch) | |
| tree | 4b0083b48cc9232996b1c13ffae26dfce9755d51 /libavcodec | |
| parent | 62244f37d116af28949787d160f80f5210083e55 (diff) | |
| download | ffmpeg-4445b614fa8104e25a5da647337a586c6a6ea6e3.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>
Diffstat (limited to 'libavcodec')
| -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 83e26335ab..a5dc2c9d94 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -1027,6 +1027,10 @@ 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; |