From: Michael Niedermayer Date: Tue, 23 Oct 2018 23:44:12 +0000 (+0200) Subject: avutil/integer: Fix integer overflow in av_mul_i() X-Git-Tag: n4.1~88 X-Git-Url: http://git.videolan.org/?p=ffmpeg.git;a=commitdiff_plain;h=3cc3cb663bf3061e40356392d2f7638de6a479fe;hp=203ccb8746997777ce66beadd53b4631d217b9cd avutil/integer: Fix integer overflow in av_mul_i() Found-by: fate Signed-off-by: Michael Niedermayer --- diff --git a/libavutil/integer.c b/libavutil/integer.c index 890e314dce..78e252fbde 100644 --- a/libavutil/integer.c +++ b/libavutil/integer.c @@ -74,7 +74,7 @@ AVInteger av_mul_i(AVInteger a, AVInteger b){ if(a.v[i]) for(j=i; j>16) + out.v[j] + a.v[i]*b.v[j-i]; + carry= (carry>>16) + out.v[j] + a.v[i]*(unsigned)b.v[j-i]; out.v[j]= carry; } }