From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/4] avcodec/hevc/hevcdec: Clean sao_pixel_buffer_v on allocation
Date: Wed, 23 Jul 2025 13:45:37 +0200
Message-ID: <20250723114540.151693-1-michael@niedermayer.cc> (raw)
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 <michael@niedermayer.cc>
---
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 21ecf063c5a..53aa8d60ff4 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])
--
2.50.1
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next reply other threads:[~2025-07-23 11:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-23 11:45 Michael Niedermayer [this message]
2025-07-23 11:45 ` [FFmpeg-devel] [PATCH 2/4] avformat/mov: make sure file_checksum is fully initialized Michael Niedermayer
2025-07-23 11:45 ` [FFmpeg-devel] [PATCH 3/4] avformat/mxfdec: Ensure klv->key is initialized Michael Niedermayer
2025-07-23 20:02 ` Tomas Härdin
2025-07-23 22:51 ` Marton Balint
2025-07-24 18:25 ` Tomas Härdin
2025-07-23 11:45 ` [FFmpeg-devel] [PATCH 4/4] avformat/vqf: Ensure that comm_chunk is fully read Michael Niedermayer
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