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avformat/ifv: Check for EOF in read_index()

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Fixes: Timeout
Fixes: 15567/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5758451487080448

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-07-18 01:00:11 +02:00
parent 9869e21776
commit 00ed04d614
1 changed files with 2 additions and 0 deletions
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2
libavformat/ifv.c
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@ -68,6 +68,8 @@ static int read_index(AVFormatContext *s,
}
for (i = start_index; i < end_index; i++) {
if (avio_feof(s->pb))
return AVERROR_EOF;
pos = avio_rl32(s->pb);
size = avio_rl32(s->pb);