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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-01-06 11:15:35 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-01-06 19:34:11 +0100 |
| commit | 96e495082aedc4fcf444e2c7ef301867ba3e0b1f (patch) | |
| tree | ee3c14253ecf4c7c0af796c2ad35f11a62445d85 /libavcodec/huffyuvdec.c | |
| parent | 4ec2daf0de1a30bdeffbeffefcb7211e96c04980 (diff) | |
avcodec/huffyuvdec: Check that slice height is non negative.
Fixes: out of array access
Fixes: 12381/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HYMT_fuzzer-5705474280783872
Fixes: 12384/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HYMT_fuzzer-5725303345774592
Fixes: 12389/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HYMT_fuzzer-5704033050820608
Fixes: 12391/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HYMT_fuzzer-5707284146028544
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/huffyuvdec.c')
| -rw-r--r-- | libavcodec/huffyuvdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/huffyuvdec.c b/libavcodec/huffyuvdec.c index 4e00692631..dfe3585e6e 100644 --- a/libavcodec/huffyuvdec.c +++ b/libavcodec/huffyuvdec.c @@ -1254,7 +1254,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, slices_info_offset = AV_RL32(avpkt->data + buf_size - 4); slice_height = AV_RL32(avpkt->data + buf_size - 8); nb_slices = AV_RL32(avpkt->data + buf_size - 12); - if (nb_slices * 8LL + slices_info_offset > buf_size - 16) + if (nb_slices * 8LL + slices_info_offset > buf_size - 16 || slice_height <= 0) return AVERROR_INVALIDDATA; } else { slice_height = height; |