From 0ddff40bf8887a023e553cf6282e9df654435456 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 2 Jul 2017 03:30:54 +0200 Subject: [PATCH] avcodec/sbrdsp_fixed: Fix integer overflow in sbr_hf_apply_noise() Fixes: runtime error: signed integer overflow: -2049425300 + -117591631 cannot be represented in type 'int' Fixes: part of 2096/clusterfuzz-testcase-minimized-4901566068817920 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 2061de8a3f73f14806e5f6ccaf9a635f740a54e6) Signed-off-by: Michael Niedermayer --- libavcodec/sbrdsp_fixed.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/sbrdsp_fixed.c b/libavcodec/sbrdsp_fixed.c index f42708a8a7..7d593a18b8 100644 --- a/libavcodec/sbrdsp_fixed.c +++ b/libavcodec/sbrdsp_fixed.c @@ -253,8 +253,8 @@ static av_always_inline int sbr_hf_apply_noise(int (*Y)[2], int m; for (m = 0; m < m_max; m++) { - int y0 = Y[m][0]; - int y1 = Y[m][1]; + unsigned y0 = Y[m][0]; + unsigned y1 = Y[m][1]; noise = (noise + 1) & 0x1ff; if (s_m[m].mant) { int shift, round;