From a6fb07d5ba3a0a1561c7e354ce9b8fbf6b404c04 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 5 May 2017 03:24:40 +0200 Subject: [PATCH] avcodec/cavsdec: Fix undefined behavior from integer overflow Fixes: 1335/clusterfuzz-testcase-minimized-5566961566089216 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit a0e5f7f363555d2befafb1c9e1579dbe0a2fbca7) Signed-off-by: Michael Niedermayer --- libavcodec/cavsdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/cavsdec.c b/libavcodec/cavsdec.c index fed7043c12..8842346c25 100644 --- a/libavcodec/cavsdec.c +++ b/libavcodec/cavsdec.c @@ -465,7 +465,7 @@ static inline void mv_pred_direct(AVSContext *h, cavs_vector *pmv_fw, cavs_vector *col_mv) { cavs_vector *pmv_bw = pmv_fw + MV_BWD_OFFS; - int den = h->direct_den[col_mv->ref]; + unsigned den = h->direct_den[col_mv->ref]; int m = FF_SIGNBIT(col_mv->x); pmv_fw->dist = h->dist[1];