From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 3/5] avformat/iamfdec: Check nb_layers before dereferencing layer
Date: Wed, 17 Jul 2024 13:27:43 +0200
Message-ID: <20240717112745.1624968-3-michael@niedermayer.cc> (raw)
In-Reply-To: <20240717112745.1624968-1-michael@niedermayer.cc>
Fixes: dereferencing pointers near NULL
Fixes: 70432/clusterfuzz-testcase-minimized-ffmpeg_dem_IAMF_fuzzer-5255672845893632
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavformat/iamfdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/iamfdec.c b/libavformat/iamfdec.c
index ce6d4aa0647..2e6608b8685 100644
--- a/libavformat/iamfdec.c
+++ b/libavformat/iamfdec.c
@@ -107,7 +107,7 @@ static int iamf_read_header(AVFormatContext *s)
if (ret < 0)
return ret;
- if (!i && !j && audio_element->layers[0].substream_count == 1)
+ if (!i && !j && audio_element->nb_layers && audio_element->layers[0].substream_count == 1)
st->disposition |= AV_DISPOSITION_DEFAULT;
else
st->disposition |= AV_DISPOSITION_DEPENDENT;
--
2.45.2
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next prev parent reply other threads:[~2024-07-17 11:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-17 11:27 [FFmpeg-devel] [PATCH 1/5] avutil/timecode: Use a 64bit framenum internally Michael Niedermayer
2024-07-17 11:27 ` [FFmpeg-devel] [PATCH 2/5] avformat/mxfdec: Reorder elements of expression in bisect loop Michael Niedermayer
2024-07-17 11:27 ` Michael Niedermayer [this message]
2024-07-21 13:36 ` [FFmpeg-devel] [PATCH 3/5] avformat/iamfdec: Check nb_layers before dereferencing layer Michael Niedermayer
2024-07-17 11:27 ` [FFmpeg-devel] [PATCH 4/5] swscale/output: Fix integer overflows in yuv2rgba64_X_c_template Michael Niedermayer
2024-07-17 11:27 ` [FFmpeg-devel] [PATCH 5/5] avformat/iamf_parse: Check for negative sample sizes Michael Niedermayer
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