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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-19 16:29:15 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-10-15 22:53:56 +0200 |
| commit | 106f11f68af643ad1f372b840d38a0a30c6e9bcf (patch) | |
| tree | 96d76727fb28f2382388aee28b37cd7dacc4d7f1 | |
| parent | eeabdef1bf96cdecf80aeb8d0478d008457b048c (diff) | |
| download | ffmpeg-106f11f68af643ad1f372b840d38a0a30c6e9bcf.tar.gz | |
avcodec/hevcdec: Check slice_cb_qp_offset / slice_cr_qp_offset
Fixes: signed integer overflow: 29 + 2147483640 cannot be represented in type 'int'
Fixes: 25413/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-5697909331591168
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/hevcdec.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c index a88160fefa..699c13bbcc 100644 --- a/libavcodec/hevcdec.c +++ b/libavcodec/hevcdec.c @@ -815,6 +815,11 @@ static int hls_slice_header(HEVCContext *s) if (s->ps.pps->pic_slice_level_chroma_qp_offsets_present_flag) { sh->slice_cb_qp_offset = get_se_golomb(gb); sh->slice_cr_qp_offset = get_se_golomb(gb); + if (sh->slice_cb_qp_offset < -12 || sh->slice_cb_qp_offset > 12 || + sh->slice_cr_qp_offset < -12 || sh->slice_cr_qp_offset > 12) { + av_log(s->avctx, AV_LOG_ERROR, "Invalid slice cx qp offset.\n"); + return AVERROR_INVALIDDATA; + } } else { sh->slice_cb_qp_offset = 0; sh->slice_cr_qp_offset = 0; |