From 529f34568e62a5bd4c47b21ed6dd4c1f0e14e519 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 24 Dec 2020 22:16:48 +0100 Subject: [PATCH] avcodec/siren: Increase noise category 5 and 6 The entry read is not used in subsequent computation, thus its value is not important. Fixes: out of array read Fixes: 28578/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SIREN_fuzzer-6332019122503680 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit f3e4ebb00790312634e42bdd3f80ffbe34ce32e5) Signed-off-by: Michael Niedermayer --- libavcodec/siren.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/siren.c b/libavcodec/siren.c index 1c17d4505d..1998fa4e6e 100644 --- a/libavcodec/siren.c +++ b/libavcodec/siren.c @@ -341,12 +341,12 @@ static const float mlt_quant[7][14] = { { 0.0f, 1.964f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f } }; -static const float noise_category5[20] = { +static const float noise_category5[21] = { 0.70711f, 0.6179f, 0.5005f, 0.3220f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f }; -static const float noise_category6[20] = { +static const float noise_category6[21] = { 0.70711f, 0.5686f, 0.3563f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f };