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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-03-13 00:34:52 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-03-21 22:27:14 +0100 |
| commit | 3015c556f316d4ab364ed55e8bc97cc0f2cc57a3 (patch) | |
| tree | 3bc3d1ca51761cb4f59c0d3d183c7df4ac13f53e | |
| parent | dd1ce72e68f77c88fe8d258d83f7315c34b1eb11 (diff) | |
| download | ffmpeg-3015c556f316d4ab364ed55e8bc97cc0f2cc57a3.tar.gz | |
avformat/mxfdec: Check count in mxf_read_strong_ref_array()
Reviewed-by: Tomas Härdin <tjoppen@acc.umu.se>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/mxfdec.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c index a32c1c55a4..a858bbb7be 100644 --- a/libavformat/mxfdec.c +++ b/libavformat/mxfdec.c @@ -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) { |