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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-12-07 00:37:25 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-12-09 21:41:15 +0100 |
| commit | 7b88dd8f0cb48b46f3178d274a9117a3d2307f4e (patch) | |
| tree | 934370c1da046f2ce2adada2ae7c3d0b0ee78473 | |
| parent | 0677bdb1f522d0d25b47bca3d8e09ece83083678 (diff) | |
| download | ffmpeg-7b88dd8f0cb48b46f3178d274a9117a3d2307f4e.tar.gz | |
avformat/matroskadec: Sanity check codec_id/track type
Fixes: memleak
Fixes: 27766/clusterfuzz-testcase-minimized-ffmpeg_dem_MATROSKA_fuzzer-5198300814508032
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/matroskadec.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c index 44db2c8358..374831baa3 100644 --- a/libavformat/matroskadec.c +++ b/libavformat/matroskadec.c @@ -2318,6 +2318,15 @@ static int matroska_parse_tracks(AVFormatContext *s) if (!track->codec_id) continue; + if ( track->type == MATROSKA_TRACK_TYPE_AUDIO && track->codec_id[0] != 'A' + || track->type == MATROSKA_TRACK_TYPE_VIDEO && track->codec_id[0] != 'V' + || track->type == MATROSKA_TRACK_TYPE_SUBTITLE && track->codec_id[0] != 'D' && track->codec_id[0] != 'S' + || track->type == MATROSKA_TRACK_TYPE_METADATA && track->codec_id[0] != 'D' && track->codec_id[0] != 'S' + ) { + av_log(matroska->ctx, AV_LOG_INFO, "Inconsistent track type\n"); + continue; + } + if (track->audio.samplerate < 0 || track->audio.samplerate > INT_MAX || isnan(track->audio.samplerate)) { av_log(matroska->ctx, AV_LOG_WARNING, |