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| author | Derek Buitenhuis <derek.buitenhuis@gmail.com> | 2012-07-16 14:17:52 -0400 |
|---|---|---|
| committer | Derek Buitenhuis <derek.buitenhuis@gmail.com> | 2012-07-22 17:46:26 -0400 |
| commit | 5ab855777de94ba616a9c42fbd0f2947f95deb89 (patch) | |
| tree | 7171f67e88a92e6e339c27effea0439f57071370 /libavformat/wav.c | |
| parent | 4f4eb380f0f96dbb7cdd2b812fa92b8b47a0f27c (diff) | |
| download | ffmpeg-5ab855777de94ba616a9c42fbd0f2947f95deb89.tar.gz | |
wav: Add check for 'fmt' tag in SMV code
If there is a 'SMV0' tag, but no 'fmt' tag, it is possible that
'st' got used as NULL.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Diffstat (limited to 'libavformat/wav.c')
| -rw-r--r-- | libavformat/wav.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavformat/wav.c b/libavformat/wav.c index c408623f36..928f82d1e1 100644 --- a/libavformat/wav.c +++ b/libavformat/wav.c @@ -480,6 +480,10 @@ static int wav_read_header(AVFormatContext *s) return ret; break; case MKTAG('S','M','V','0'): + if (!got_fmt) { + av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n"); + return AVERROR_INVALIDDATA; + } // SMV file, a wav file with video appended. if (size != MKTAG('0','2','0','0')) { av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n"); |