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cbs_apv: Fix memory leak on metadata parse failure

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Buffers are allocated inside some metadata types, so we must ensure
that the object is visible to the free function before a parse failure.

Found by libFuzzer.
This commit is contained in:
Mark Thompson
2025-05-14 21:47:00 +01:00
parent a65d028fb1
commit 88f2ccdf16
1 changed files with 2 additions and 2 deletions
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4
libavcodec/cbs_apv_syntax_template.c
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@ -543,11 +543,11 @@ static int FUNC(metadata)(CodedBitstreamContext *ctx, RWContext *rw,
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
current->metadata_count = p + 1;
CHECK(FUNC(metadata_payload)(ctx, rw, pl)); CHECK(FUNC(metadata_payload)(ctx, rw, pl));
metadata_bytes_left -= pl->payload_size; metadata_bytes_left -= pl->payload_size;
current->metadata_count = p + 1;
if (metadata_bytes_left == 0) if (metadata_bytes_left == 0)
break; break;
} }