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avformat/mxfdec: Check count in mxf_read_strong_ref_array()

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Reviewed-by: Tomas Härdin <tjoppen@acc.umu.se>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2022-03-13 00:34:52 +01:00
parent dd1ce72e68
commit 3015c556f3
1 changed files with 7 additions and 1 deletions
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8
libavformat/mxfdec.c
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@ -933,7 +933,13 @@ static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, i
static int mxf_read_strong_ref_array(AVIOContext *pb, UID **refs, int *count)
{
*count = avio_rb32(pb);
unsigned c = avio_rb32(pb);
//avio_read() used int
if (c > INT_MAX / sizeof(UID))
return AVERROR_PATCHWELCOME;
*count = c;
av_free(*refs);
*refs = av_calloc(*count, sizeof(UID));
if (!*refs) {