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avformat/rmdec: Check for EOF in index packet reading

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Fixes: Timeout(>10sec -> 1ms)
Fixes: 27284/clusterfuzz-testcase-minimized-ffmpeg_dem_RM_fuzzer-6304211110985728

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 ebf4bc629e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-11-13 23:30:47 +01:00
parent f38911529e
commit fe0ff3e1d2
1 changed files with 2 additions and 0 deletions
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libavformat/rmdec.c
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@ -457,6 +457,8 @@ static int rm_read_index(AVFormatContext *s)
}
for (n = 0; n < n_pkts; n++) {
if (avio_feof(pb))
return AVERROR_INVALIDDATA;
avio_skip(pb, 2);
pts = avio_rb32(pb);
pos = avio_rb32(pb);