From ad517ee6e44f093e28021ffd51c7eb2e1394b1a9 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 28 Sep 2021 00:11:50 +0200 Subject: avcodec/apedec: Fix undefined integer overflow in long_filter_ehigh_3830() Fixes: signed integer overflow: -2145648640 - 3357696 cannot be represented in type 'int' Fixes: 38899/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5358815017566208 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/apedec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libavcodec/apedec.c') diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c index 27d0ff3565..014b5615ec 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -979,7 +979,7 @@ static void long_filter_ehigh_3830(int32_t *buffer, int length) for (j = 7; j > 0; j--) delay[j] = delay[j - 1]; delay[0] = buffer[i]; - buffer[i] -= dotprod >> 9; + buffer[i] -= (unsigned)(dotprod >> 9); } } -- cgit v1.2.3