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author | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-19 16:29:15 +0200 |
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committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-09 13:37:21 +0200 |
commit | 4b6bcdd9973bb97e3b57afc742a596d5f46f40de (patch) | |
tree | 990337648799197c02e196134c42a1aca9a5ef0c /libavcodec | |
parent | d859b40bf2b074cd5be69e978177a5cec4ce65be (diff) | |
download | ffmpeg-4b6bcdd9973bb97e3b57afc742a596d5f46f40de.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>
(cherry picked from commit 106f11f68af643ad1f372b840d38a0a30c6e9bcf)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
-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 90c56924a0..97f9def809 100644 --- a/libavcodec/hevcdec.c +++ b/libavcodec/hevcdec.c @@ -763,6 +763,11 @@ 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; |