diff options
| author | Michael Niedermayer <[email protected]> | 2021-03-03 10:49:03 +0100 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2021-10-06 14:41:40 +0200 |
| commit | e9f3c3359160d0cd55f622c761733e0db796535f (patch) | |
| tree | 23e58de333d4455d329a05117f3374cec30ce451 | |
| parent | 99e2e63ae287b2f8477de3fd6a032b1503ceba21 (diff) | |
avformat/dcstr: Check sample rate
Fixes: signed integer overflow: -1300248894420254720 * 16 cannot be represented in type 'long'
Fixes: 30879/clusterfuzz-testcase-minimized-ffmpeg_dem_DCSTR_fuzzer-5094464215449600
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <[email protected]>
Signed-off-by: Michael Niedermayer <[email protected]>
(cherry picked from commit fdcb966f4a3c6f872891b8dd554e3652b9e02d4f)
Signed-off-by: Michael Niedermayer <[email protected]>
| -rw-r--r-- | libavformat/dcstr.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/dcstr.c b/libavformat/dcstr.c index 9041a86539..9ddccc7f2d 100644 --- a/libavformat/dcstr.c +++ b/libavformat/dcstr.c @@ -43,6 +43,8 @@ static int dcstr_read_header(AVFormatContext *s) st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; st->codecpar->channels = avio_rl32(s->pb); st->codecpar->sample_rate = avio_rl32(s->pb); + if (st->codecpar->sample_rate <= 0) + return AVERROR_INVALIDDATA; codec = avio_rl32(s->pb); align = avio_rl32(s->pb); avio_skip(s->pb, 4); |