From 7a21c37f75ef493bafed3e3fdfbd3cf48990439b Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 23 Jul 2025 13:05:29 +0200 Subject: [PATCH] avcodec/hevc/hevcdec: Clean sao_pixel_buffer_v on allocation Fixes: use of uninitialized memory Fixes: 378102648/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-5896308499480576 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/hevc/hevcdec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/hevc/hevcdec.c b/libavcodec/hevc/hevcdec.c index c2897ee336..a5012cf062 100644 --- a/libavcodec/hevc/hevcdec.c +++ b/libavcodec/hevc/hevcdec.c @@ -152,10 +152,10 @@ static int pic_arrays_init(HEVCLayerContext *l, const HEVCSPS *sps) int w = sps->width >> sps->hshift[c_idx]; int h = sps->height >> sps->vshift[c_idx]; l->sao_pixel_buffer_h[c_idx] = - av_malloc((w * 2 * sps->ctb_height) << + av_mallocz((w * 2 * sps->ctb_height) << sps->pixel_shift); l->sao_pixel_buffer_v[c_idx] = - av_malloc((h * 2 * sps->ctb_width) << + av_mallocz((h * 2 * sps->ctb_width) << sps->pixel_shift); if (!l->sao_pixel_buffer_h[c_idx] || !l->sao_pixel_buffer_v[c_idx])