From 633924539aae73714facf31aa7001d01e8be48a1 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 20 Jan 2021 23:56:43 +0100 Subject: avcodec/aacdec_template: Avoid undefined negation in imdct_and_windowing_eld() Fixes: negation of -2147483648 cannot be represented in type 'INTFLOAT' (aka 'int'); cast to an unsigned type to negate this value to itself Fixes: 29057/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_FIXED_fuzzer-5642758933053440 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/aacdec_template.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libavcodec/aacdec_template.c') diff --git a/libavcodec/aacdec_template.c b/libavcodec/aacdec_template.c index aa89f7cbb8..7b53b27616 100644 --- a/libavcodec/aacdec_template.c +++ b/libavcodec/aacdec_template.c @@ -2905,7 +2905,7 @@ static void imdct_and_windowing_ld(AACContext *ac, SingleChannelElement *sce) static void imdct_and_windowing_eld(AACContext *ac, SingleChannelElement *sce) { - INTFLOAT *in = sce->coeffs; + UINTFLOAT *in = sce->coeffs; INTFLOAT *out = sce->ret; INTFLOAT *saved = sce->saved; INTFLOAT *buf = ac->buf_mdct; -- cgit v1.2.3