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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-17 22:52:59 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-11 21:23:49 +0200 |
| commit | d40aefc2dc6221956d2ca2428aff421a88e1ae63 (patch) | |
| tree | 71de678d8eaf8a45823c19c6430a3ed7f585968b | |
| parent | cd6449508401b5f44d3e5f4dbf72be883d984682 (diff) | |
| download | ffmpeg-d40aefc2dc6221956d2ca2428aff421a88e1ae63.tar.gz | |
avformat/soxdec: Check channels to be positive
Fixes: signed integer overflow: 32 * -1795162112 cannot be represented in type 'int'
Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_SOX_fuzzer-6724151473340416
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b0588b73daeb0e6a0741f39b33943c67eac71619)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/soxdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/soxdec.c b/libavformat/soxdec.c index 12a94c8ffa..2801c3e239 100644 --- a/libavformat/soxdec.c +++ b/libavformat/soxdec.c @@ -90,7 +90,7 @@ static int sox_read_header(AVFormatContext *s) sample_rate_frac); if ((header_size + 4) & 7 || header_size < SOX_FIXED_HDR + comment_size - || st->codecpar->channels > 65535) /* Reserve top 16 bits */ { + || st->codecpar->channels > 65535 || st->codecpar->channels <= 0) /* Reserve top 16 bits */ { av_log(s, AV_LOG_ERROR, "invalid header\n"); return AVERROR_INVALIDDATA; } |