From a8de60ba2740185c53cabbee6c00ed67a0d530e2 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 10 May 2017 19:02:05 +0200 Subject: avcodec/eatqi: Fix runtime error: signed integer overflow: 4466147 * 1075 cannot be represented in type 'int' Fixes: 1443/clusterfuzz-testcase-minimized-4826998612426752 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/eatqi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/eatqi.c b/libavcodec/eatqi.c index f5ecacb..7252894 100644 --- a/libavcodec/eatqi.c +++ b/libavcodec/eatqi.c @@ -112,7 +112,7 @@ static inline void tqi_idct_put(AVCodecContext *avctx, AVFrame *frame, static void tqi_calculate_qtable(TqiContext *t, int quant) { - const int qscale = (215 - 2*quant)*5; + const int64_t qscale = (215 - 2*quant)*5; int i; t->intra_matrix[0] = (ff_inv_aanscales[0] * ff_mpeg1_default_intra_matrix[0]) >> 11; -- cgit v1.1