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avcodec/evc_ps: Check chroma_format_idc

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Fixes: out of array access
Fixes: 62678/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4858264984354816

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Kieran Kunhya <kierank@obe.tv>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2023-10-12 23:58:18 +02:00
parent b79fc70596
commit ef3b42738b
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1 changed files with 4 additions and 0 deletions
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4
libavcodec/evc_ps.c
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@ -179,6 +179,10 @@ int ff_evc_parse_sps(GetBitContext *gb, EVCParamSets *ps)
// 2 - 4:2:2
// 3 - 4:4:4
sps->chroma_format_idc = get_ue_golomb_31(gb);
if (sps->chroma_format_idc > 3) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
sps->pic_width_in_luma_samples = get_ue_golomb_long(gb);
sps->pic_height_in_luma_samples = get_ue_golomb_long(gb);