From 679a572e44e5cecba42d43dde7892a1502c43c25 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 31 Jul 2024 21:43:39 +0200 Subject: [PATCH] avcodec/snow: Fix off by 1 error in run_buffer Fixes: out of array access Fixes: 70741/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SNOW_fuzzer-5703668010647552 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 06f5ed40f8fceb2542add052c57608121eda2f41) Signed-off-by: Michael Niedermayer --- libavcodec/snow.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/snow.c b/libavcodec/snow.c index 59815d00d9..1b0fc6dc7d 100644 --- a/libavcodec/snow.c +++ b/libavcodec/snow.c @@ -427,7 +427,7 @@ av_cold int ff_snow_common_init(AVCodecContext *avctx){ !FF_ALLOCZ_TYPED_ARRAY(s->spatial_dwt_buffer, width * height) || //FIXME this does not belong here !FF_ALLOCZ_TYPED_ARRAY(s->temp_dwt_buffer, width) || !FF_ALLOCZ_TYPED_ARRAY(s->temp_idwt_buffer, width) || - !FF_ALLOCZ_TYPED_ARRAY(s->run_buffer, ((width + 1) >> 1) * ((height + 1) >> 1))) + !FF_ALLOCZ_TYPED_ARRAY(s->run_buffer, ((width + 1) >> 1) * ((height + 1) >> 1) + 1)) return AVERROR(ENOMEM); for(i=0; i