From a1f38c75893c852cf19dcf3e4553549ba1e70950 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 14 Jan 2018 00:39:39 +0100 Subject: avcodec/ac3dec_fixed: Fix integer overflow in scale_coefs() Fixes: runtime error: signed integer overflow: 2147483520 + 128 cannot be represented in type 'int' Fixes: 4800/clusterfuzz-testcase-minimized-6110372403609600 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/ac3dec_fixed.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'libavcodec/ac3dec_fixed.c') diff --git a/libavcodec/ac3dec_fixed.c b/libavcodec/ac3dec_fixed.c index 9a6d7a08b1..bd66175d50 100644 --- a/libavcodec/ac3dec_fixed.c +++ b/libavcodec/ac3dec_fixed.c @@ -64,8 +64,8 @@ static void scale_coefs ( int dynrng, int len) { - int i, shift, round; - unsigned mul; + int i, shift; + unsigned mul, round; int temp, temp1, temp2, temp3, temp4, temp5, temp6, temp7; mul = (dynrng & 0x1f) + 0x20; -- cgit v1.2.3