diff options
| -rw-r--r-- | libavformat/dxa.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/libavformat/dxa.c b/libavformat/dxa.c index a616f8f74b..0d820c7413 100644 --- a/libavformat/dxa.c +++ b/libavformat/dxa.c @@ -118,9 +118,12 @@ static int dxa_read_header(AVFormatContext *s) if(tag == MKTAG('d', 'a', 't', 'a')) break; avio_skip(pb, fsize); } - c->bpc = (fsize + c->frames - 1) / c->frames; - if(ast->codecpar->block_align) + c->bpc = (fsize + (int64_t)c->frames - 1) / c->frames; + if(ast->codecpar->block_align) { + if (c->bpc > INT_MAX - ast->codecpar->block_align + 1) + return AVERROR_INVALIDDATA; c->bpc = ((c->bpc + ast->codecpar->block_align - 1) / ast->codecpar->block_align) * ast->codecpar->block_align; + } c->bytes_left = fsize; c->wavpos = avio_tell(pb); avio_seek(pb, c->vidpos, SEEK_SET); |