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avformat/sctp: Check size in sctp_write()

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Fixes: out of array access
No testcase

Found-by: Joshua Rogers <joshua@joshua.hu> with ZeroPath
Reviewed-by: Joshua Rogers <joshua@joshua.hu>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2025-10-31 23:08:45 +01:00
parent 83e0298de2
commit 5b98cea4bf
1 changed files with 3 additions and 0 deletions
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3
libavformat/sctp.c
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@@ -332,6 +332,9 @@ static int sctp_write(URLContext *h, const uint8_t *buf, int size)
}
if (s->max_streams) {
if (size < 2)
return AVERROR(EINVAL);
/*StreamId is introduced as a 2byte code into the stream*/
struct sctp_sndrcvinfo info = { 0 };
info.sinfo_stream = AV_RB16(buf);