[FFmpeg-devel] [PATCH] dcstr: fix division by zero

[Andreas Cadhalpun]

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
---
 libavformat/dcstr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/dcstr.c b/libavformat/dcstr.c
index 69fae41..d5d2281 100644
--- a/libavformat/dcstr.c
+++ b/libavformat/dcstr.c
@@ -47,7 +47,7 @@ static int dcstr_read_header(AVFormatContext *s)
     avio_skip(s->pb, 4);
     st->duration           = avio_rl32(s->pb);
     st->codecpar->channels   *= avio_rl32(s->pb);
-    if (!align || align > INT_MAX / st->codecpar->channels)
+    if (!align || !st->codecpar->channels || align > INT_MAX / st->codecpar->channels)
         return AVERROR_INVALIDDATA;
     st->codecpar->block_align = align * st->codecpar->channels;
 
-- 
2.9.3