From 3ed0d94b827a67b91b727f2a58ed96e66d8ea2d7 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 13 May 2017 23:16:44 +0200 Subject: [PATCH] avcodec/svq3: Fix runtime error: signed integer overflow: 169 * 12717677 cannot be represented in type 'int' Fixes: 1556/clusterfuzz-testcase-minimized-5027865978470400 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 86b1b0d33dd7459f0d9c352c51ee2e374fd6f7fe) Signed-off-by: Michael Niedermayer --- libavcodec/svq3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c index c9d4160a1a..4814b80c3a 100644 --- a/libavcodec/svq3.c +++ b/libavcodec/svq3.c @@ -263,7 +263,7 @@ static void svq3_add_idct_c(uint8_t *dst, int16_t *block, int i; if (dc) { - dc = 13 * 13 * (dc == 1 ? 1538 * block[0] + dc = 13 * 13 * (dc == 1 ? 1538U* block[0] : qmul * (block[0] >> 3) / 2); block[0] = 0; }