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avcodec/cbs_h266_syntax_template: Check bit depth with range extension

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Fixes: shift exponent 62 is too large for 32-bit type 'int'
Fixes: 71020/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-6444916325023744
Fixes: 71285/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-4761971281428480

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-09-19 22:32:36 +02:00
parent e9f588af95
commit 9d25b9665e
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1 changed files with 2 additions and 0 deletions
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libavcodec/cbs_h266_syntax_template.c
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@ -1645,6 +1645,8 @@ static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw,
ub(7, sps_extension_7bits);
if (current->sps_range_extension_flag) {
if (current->sps_bitdepth_minus8 <= 10 - 8)
return AVERROR_INVALIDDATA;
CHECK(FUNC(sps_range_extension)(ctx, rw, current));
} else {
infer(sps_extended_precision_flag, 0);