[FFmpeg-devel] [PATCH 2/3] avformat/vividas: Check sample_rate
Michael Niedermayer
michael at niedermayer.cc
Wed Nov 11 18:01:01 EET 2020
Fixes: Assertion c > 0 failed at libavutil/mathematics.c
Fixes: 27001/clusterfuzz-testcase-minimized-ffmpeg_dem_VIVIDAS_fuzzer-5726041328582656
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
libavformat/vividas.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavformat/vividas.c b/libavformat/vividas.c
index 46c66bf9a0..287edaeb10 100644
--- a/libavformat/vividas.c
+++ b/libavformat/vividas.c
@@ -373,6 +373,8 @@ static int track_header(VividasDemuxContext *viv, AVFormatContext *s, uint8_t *
avio_rl16(pb); //codec_subid
st->codecpar->channels = avio_rl16(pb); // channels
st->codecpar->sample_rate = avio_rl32(pb); // sample_rate
+ if (st->codecpar->sample_rate <= 0)
+ return AVERROR_INVALIDDATA;
avio_seek(pb, 10, SEEK_CUR); // data_1
q = avio_r8(pb);
avio_seek(pb, q, SEEK_CUR); // data_2
--
2.17.1
More information about the ffmpeg-devel
mailing list