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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-28 17:44:13 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-06 14:54:16 +0300 |
| commit | 6785185ea55a0a479195bf9b588f2f8c2de71563 (patch) | |
| tree | 75215198d1439d532f587a96ceee3f340f2b3e99 /libavformat | |
| parent | 4a688d139b61ba105d9af94e0de87c1248d915d2 (diff) | |
avformat/mvdec: Check sample rate in parse_audio_var()
Fixes: signed integer overflow: -635424002382840000 * 16 cannot be represented in type 'long'
Fixes: 33612/clusterfuzz-testcase-minimized-ffmpeg_dem_MV_fuzzer-5704741108711424
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 0ff60249a57cba00ab679ca6190a802cc0c7b9c7)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/mvdec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/mvdec.c b/libavformat/mvdec.c index 2b7058560d..15bf789899 100644 --- a/libavformat/mvdec.c +++ b/libavformat/mvdec.c @@ -157,6 +157,8 @@ static int parse_audio_var(AVFormatContext *avctx, AVStream *st, return set_channels(avctx, st, var_read_int(pb, size)); } else if (!strcmp(name, "SAMPLE_RATE")) { st->codecpar->sample_rate = var_read_int(pb, size); + if (st->codecpar->sample_rate <= 0) + return AVERROR_INVALIDDATA; avpriv_set_pts_info(st, 33, 1, st->codecpar->sample_rate); } else if (!strcmp(name, "SAMPLE_WIDTH")) { uint64_t bpc = var_read_int(pb, size) * (uint64_t)8; |