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avcodec/cbs_h2645: Check NAL space

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Found-by-reviewing: CID1419833 Untrusted loop bound

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b91e3c4c90)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-04-22 03:23:10 +02:00
parent 1dbfdd2d30
commit ad26b2d05a
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1 changed files with 4 additions and 0 deletions
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4
libavcodec/cbs_h2645.c
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@ -708,7 +708,11 @@ static int cbs_h2645_split_fragment(CodedBitstreamContext *ctx,
start = bytestream2_tell(&gbc);
for(i = 0; i < num_nalus; i++) {
if (bytestream2_get_bytes_left(&gbc) < 2)
return AVERROR_INVALIDDATA;
size = bytestream2_get_be16(&gbc);
if (bytestream2_get_bytes_left(&gbc) < size)
return AVERROR_INVALIDDATA;
bytestream2_skip(&gbc, size);
}
end = bytestream2_tell(&gbc);