From 12a511f2c265d6319b7fdc332a6aa8aca1535309 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 22 Nov 2017 20:18:40 +0100 Subject: [PATCH] avcodec/sbrdsp_fixed: Fix integer overflow Fixes: signed integer overflow: 2147483598 + 64 cannot be represented in type 'int' Fixes: 4337/clusterfuzz-testcase-minimized-6192658616680448 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/sbrdsp_fixed.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/sbrdsp_fixed.c b/libavcodec/sbrdsp_fixed.c index a0ef6859f1..57d98da979 100644 --- a/libavcodec/sbrdsp_fixed.c +++ b/libavcodec/sbrdsp_fixed.c @@ -133,7 +133,7 @@ static av_always_inline SoftFloat autocorr_calc(int64_t accu) round = 1U << (nz-1); mant = (int)((accu + round) >> nz); - mant = (mant + 0x40)>>7; + mant = (mant + 0x40LL)>>7; mant *= 64; expo = nz + 15; return av_int2sf(mant, 30 - expo);