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avformat/mov: Use av_sat_add64() in mov_read_sidx() 

This avoids a potential integer overflow, no testcase is known

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-10-31 12:06:21 +01:00
parent 7d75ecf8d2
commit c34004d82f
1 changed files with 1 additions and 1 deletions
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libavformat/mov.c
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@ -5052,7 +5052,7 @@ static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
static int mov_read_sidx(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
int64_t stream_size = avio_size(pb);
int64_t offset = avio_tell(pb) + atom.size, pts, timestamp;
int64_t offset = av_sat_add64(avio_tell(pb), atom.size), pts, timestamp;
uint8_t version, is_complete;
unsigned i, j, track_id, item_count;
AVStream *st = NULL;