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Code Issues Releases Activity

avcodec/shorten: Sanity check maxnlpc

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Fixes OOM
Fixes: 2131/clusterfuzz-testcase-minimized-4718045157130240

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 e77ddd31a8)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-06-09 02:16:54 +02:00
parent 1729101c44
commit 01ed8d93b2
1 changed files with 4 additions and 0 deletions
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4
libavcodec/shorten.c
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@ -445,6 +445,10 @@ static int read_header(ShortenContext *s)
s->blocksize = blocksize;
maxnlpc = get_uint(s, LPCQSIZE);
if (maxnlpc > 1024U) {
av_log(s->avctx, AV_LOG_ERROR, "maxnlpc is: %d\n", maxnlpc);
return AVERROR_INVALIDDATA;
}
s->nmean = get_uint(s, 0);
skip_bytes = get_uint(s, NSKIPSIZE);