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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-08-04 12:21:51 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-08-05 17:54:24 +0200 |
| commit | 652ea23cb34bc59b38c0088865600e2b86079815 (patch) | |
| tree | da3e9c7d98d7ee746574046ce295e9f72439f121 /libavformat | |
| parent | 76133d7c8bfe19833e1973849eabe6a78913e4aa (diff) | |
avformat/realtextdec: Check for duplicate extradata in realtext_read_header()
Fixes: memleak
Fixes: 16140/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5684008052064256
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/realtextdec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavformat/realtextdec.c b/libavformat/realtextdec.c index e12871e6ad..204e557aa2 100644 --- a/libavformat/realtextdec.c +++ b/libavformat/realtextdec.c @@ -87,6 +87,10 @@ static int realtext_read_header(AVFormatContext *s) /* save header to extradata */ const char *p = ff_smil_get_attr_ptr(buf.str, "duration"); + if (st->codecpar->extradata) { + res = AVERROR_INVALIDDATA; + goto end; + } if (p) duration = read_ts(p); st->codecpar->extradata = av_strdup(buf.str); |