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tta: better check for totalframes. 

Avoids crash, Fixes Ticket 690

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-11-27 15:37:15 +01:00
parent 102a2463d3
commit b7c7eae7d9
1 changed files with 2 additions and 2 deletions
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4
libavformat/tta.c
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@ -72,8 +72,8 @@ static int tta_read_header(AVFormatContext *s, AVFormatParameters *ap)
c->totalframes = datalen / framelen + ((datalen % framelen) ? 1 : 0);
c->currentframe = 0;
if(c->totalframes >= UINT_MAX/sizeof(uint32_t)){
av_log(s, AV_LOG_ERROR, "totalframes too large\n");
if(c->totalframes >= UINT_MAX/sizeof(uint32_t) || c->totalframes <= 0){
av_log(s, AV_LOG_ERROR, "totalframes %d invalid\n", c->totalframes);
return -1;
}