From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/4] avformat/alp: Check num_channels
Date: Sun, 20 Mar 2022 14:47:36 +0100
Message-ID: <20220320134739.28728-1-michael@niedermayer.cc> (raw)
Fixes: division by 0
Fixes: 45615/clusterfuzz-testcase-minimized-ffmpeg_dem_ALP_fuzzer-582660348405350
Fixes: 45625/clusterfuzz-testcase-minimized-ffmpeg_dem_ALP_fuzzer-4821437943250944
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavformat/alp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/alp.c b/libavformat/alp.c
index f2428a9e3b..40e4890a38 100644
--- a/libavformat/alp.c
+++ b/libavformat/alp.c
@@ -122,7 +122,7 @@ static int alp_read_header(AVFormatContext *s)
par->format = AV_SAMPLE_FMT_S16;
par->sample_rate = hdr->sample_rate;
- if (hdr->num_channels > 2)
+ if (hdr->num_channels > 2 || hdr->num_channels == 0)
return AVERROR_INVALIDDATA;
av_channel_layout_default(&par->ch_layout, hdr->num_channels);
--
2.17.1
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next reply other threads:[~2022-03-20 13:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-20 13:47 Michael Niedermayer [this message]
2022-03-20 13:47 ` [FFmpeg-devel] [PATCH 2/4] avformat/cafdec: Do not store empty keys in read_info_chunk() Michael Niedermayer
2022-03-20 13:47 ` [FFmpeg-devel] [PATCH 3/4] avformat/apm: Check channels Michael Niedermayer
2022-03-20 13:47 ` [FFmpeg-devel] [PATCH 4/4] avformat/aqtitledec: Skip unrepresentable durations Michael Niedermayer
2022-03-27 10:00 ` [FFmpeg-devel] [PATCH 1/4] avformat/alp: Check num_channels Michael Niedermayer
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