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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-08-04 21:27:44 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-08-14 18:21:00 +0200 |
| commit | 66ee75d76ce56a3553a99d67e74b8a9970c18f5b (patch) | |
| tree | 2c49515c69542e2f6edb2468126591f29db41658 | |
| parent | 8ca072a373f5e2b6689a8649c79a03d12db5eb0b (diff) | |
| download | ffmpeg-66ee75d76ce56a3553a99d67e74b8a9970c18f5b.tar.gz | |
avformat/mpeg: Check an avio_read() for failure
Fixes: use-of-uninitialized-value
Fixes: 70849/clusterfuzz-testcase-minimized-ffmpeg_dem_MPEGPS_fuzzer-4684401009557504
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/mpeg.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libavformat/mpeg.c b/libavformat/mpeg.c index c3dff3e4ea..2c766a4ee9 100644 --- a/libavformat/mpeg.c +++ b/libavformat/mpeg.c @@ -566,7 +566,9 @@ redo: static const unsigned char avs_seqh[4] = { 0, 0, 1, 0xb0 }; unsigned char buf[8]; - avio_read(s->pb, buf, 8); + ret = avio_read(s->pb, buf, 8); + if (ret != 8) + return AVERROR_INVALIDDATA; avio_seek(s->pb, -8, SEEK_CUR); if (!memcmp(buf, avs_seqh, 4) && (buf[6] != 0 || buf[7] != 1)) codec_id = AV_CODEC_ID_CAVS; |