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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-06-21 22:48:54 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-06-23 01:06:29 +0200 |
| commit | 540e8c2d641bf90fc28e47e170f8c0b1962197e9 (patch) | |
| tree | 72797d3c972206bd5c2f32f9e2c62289a93a5fab /libavcodec/mjpegdec.c | |
| parent | a734ff4b0e7e227d7815974a8aee51d09def0153 (diff) | |
| download | ffmpeg-540e8c2d641bf90fc28e47e170f8c0b1962197e9.tar.gz | |
avcodec/mjpegdec: Check for end of bitstream in ljpeg_decode_rgb_scan()
Fixes: Timeout
Fixes: 8648/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MJPEG_fuzzer-5108395525799936
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/mjpegdec.c')
| -rw-r--r-- | libavcodec/mjpegdec.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index d1dca84d36..00cfdd7151 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -1055,6 +1055,11 @@ static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int nb_components, int p for (mb_x = 0; mb_x < s->mb_width; mb_x++) { int modified_predictor = predictor; + if (get_bits_left(&s->gb) < 1) { + av_log(s->avctx, AV_LOG_ERROR, "bitstream end in rgb_scan\n"); + return AVERROR_INVALIDDATA; + } + if (s->restart_interval && !s->restart_count){ s->restart_count = s->restart_interval; resync_mb_x = mb_x; |