From 34056a94eab5f8fbc7e0b8510f7c9851931f23b7 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 16 Apr 2023 16:56:40 +0200 Subject: [PATCH] avcodec/utils: the IFF_ILBM implementation assumes that there are a multiple of 16 allocated Fixes: out of array access Fixes: 45982/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IFF_ILBM_fuzzer-5124452659888128 Fixes: 45982/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IFF_ILBM_fuzzer-6362836707442688 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/utils.c b/libavcodec/utils.c index 599da21dba..ef1845954e 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -317,7 +317,7 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, } if (s->codec_id == AV_CODEC_ID_IFF_ILBM) { - w_align = FFMAX(w_align, 8); + w_align = FFMAX(w_align, 16); } *width = FFALIGN(*width, w_align);