From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 5/5] avformat/mvdec: Check bytes_per_sample
Date: Thu, 23 Dec 2021 22:15:27 +0100
Message-ID: <20211223211527.20408-5-michael@niedermayer.cc> (raw)
In-Reply-To: <20211223211527.20408-1-michael@niedermayer.cc>
Fixes: division by zero
Fixes: 42814/clusterfuzz-testcase-minimized-ffmpeg_dem_MV_fuzzer-4787014237552640
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavformat/mvdec.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavformat/mvdec.c b/libavformat/mvdec.c
index 1a5012e5076..390f6ba4de8 100644
--- a/libavformat/mvdec.c
+++ b/libavformat/mvdec.c
@@ -366,6 +366,9 @@ static int mv_read_header(AVFormatContext *avctx)
avpriv_request_sample(avctx, "Audio compression (format %i)", v);
}
+ if (bytes_per_sample <= 0)
+ return AVERROR_INVALIDDATA;
+
if (set_channels(avctx, ast, avio_rb32(pb)) < 0)
return AVERROR_INVALIDDATA;
--
2.17.1
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next prev parent reply other threads:[~2021-12-23 21:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-23 21:15 [FFmpeg-devel] [PATCH 1/5] avcodec/targa: Check input size for uncompressed TGA before allocation Michael Niedermayer
2021-12-23 21:15 ` [FFmpeg-devel] [PATCH 2/5] avcodec/cdgraphics: avoid signed overflow in alpha Michael Niedermayer
2021-12-23 21:45 ` Andreas Rheinhardt
2021-12-25 10:43 ` Michael Niedermayer
2021-12-23 21:15 ` [FFmpeg-devel] [PATCH 3/5] avformat/flvdec: timestamps cannot use the full int64 range Michael Niedermayer
2021-12-30 20:44 ` Michael Niedermayer
2021-12-23 21:15 ` [FFmpeg-devel] [PATCH 4/5] avcodec/apedec: fix integer overflow in 8bit samples Michael Niedermayer
2021-12-30 20:42 ` Michael Niedermayer
2021-12-23 21:15 ` Michael Niedermayer [this message]
2021-12-23 23:07 ` [FFmpeg-devel] [PATCH 5/5] avformat/mvdec: Check bytes_per_sample Peter Ross
2021-12-24 3:32 ` John-Paul Stewart
2021-12-24 16:58 ` Michael Niedermayer
2021-12-24 20:29 ` John-Paul Stewart
2021-12-25 10:43 ` Michael Niedermayer
2021-12-30 21:11 ` [FFmpeg-devel] [PATCH 1/5] avcodec/targa: Check input size for uncompressed TGA before allocation Michael Niedermayer
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