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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-31 16:19:42 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-20 14:21:24 +0100 |
| commit | ff6a6b94174ecda019d6cbeb07cdce4891db38dd (patch) | |
| tree | b3933fb5384ee597bfe6b080136161c03bea62e8 | |
| parent | 4a4f4cc814f31ad46db847a45dd9b4142bc7b30f (diff) | |
| download | ffmpeg-ff6a6b94174ecda019d6cbeb07cdce4891db38dd.tar.gz | |
avformat/mvdec: Check for EOF in read_index()
Fixes: Timeout
Fixes: 29550/clusterfuzz-testcase-minimized-ffmpeg_dem_MV_fuzzer-5094307193290752
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 6c64351bb1f4dc148069a37754b746fcd4c784cf)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/mvdec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/mvdec.c b/libavformat/mvdec.c index 37e16870e7..7d59d82b13 100644 --- a/libavformat/mvdec.c +++ b/libavformat/mvdec.c @@ -269,6 +269,8 @@ static void read_index(AVIOContext *pb, AVStream *st) uint32_t pos = avio_rb32(pb); uint32_t size = avio_rb32(pb); avio_skip(pb, 8); + if (avio_feof(pb)) + return ; av_add_index_entry(st, pos, timestamp, size, 0, AVINDEX_KEYFRAME); if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) { timestamp += size / (st->codecpar->channels * 2LL); |