From 1e6ee86d9254e8fd2158cc9a31d3be96b0809411 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 5 Jun 2017 19:33:56 +0200 Subject: [PATCH] avcodec/cavs: Fix runtime error: signed integer overflow: -12648062 * 256 cannot be represented in type 'int' Fixes: 2067/clusterfuzz-testcase-minimized-5578430902960128 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/cavs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/libavcodec/cavs.c b/libavcodec/cavs.c index 40bb63a278..ba2b6ef232 100644 --- a/libavcodec/cavs.c +++ b/libavcodec/cavs.c @@ -537,8 +537,7 @@ void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type) static inline void scale_mv(AVSContext *h, int *d_x, int *d_y, cavs_vector *src, int distp) { - int den = h->scale_den[FFMAX(src->ref, 0)]; - + int64_t den = h->scale_den[FFMAX(src->ref, 0)]; *d_x = (src->x * distp * den + 256 + FF_SIGNBIT(src->x)) >> 9; *d_y = (src->y * distp * den + 256 + FF_SIGNBIT(src->y)) >> 9; }