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lavc/vvc: Add check to num_multi_layer_olss 

Check that vps_each_layer_is_an_ols_flag, which indicates that "at
least one OLS specified by the VPS contains more than one layer," is
set if num_multi_layer_olss is non-zero.

Fixes: 65160/clusterfuzz-testcase-minimized-ffmpeg_BSF_VVC_METADATA_fuzzer-4665241535119360

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Frank Plowman <post@frankplowman.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Frank Plowman 2024-01-30 09:40:57 +00:00 committed by James Almer
parent bc944168db
commit 36a986d9a1
1 changed files with 2 additions and 0 deletions
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2
libavcodec/cbs_h266_syntax_template.c
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@ -911,6 +911,8 @@ static int FUNC(vps) (CodedBitstreamContext *ctx, RWContext *rw,
num_multi_layer_olss++;
}
}
if (!current->vps_each_layer_is_an_ols_flag && num_multi_layer_olss == 0)
return AVERROR_INVALIDDATA;
}
for (i = 0; i <= current->vps_num_ptls_minus1; i++) {