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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-03-09 01:05:20 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-03-10 02:44:45 +0100 |
| commit | 3e7c847aaf5a298b62afae12b4ecfb8e12385998 (patch) | |
| tree | 86e2208ddc074e4b362cad45cc36e7544240da9c /libavformat/oggparseogm.c | |
| parent | 010b7b30b721b90993e05e9ee6338e88bb8debb3 (diff) | |
| download | ffmpeg-3e7c847aaf5a298b62afae12b4ecfb8e12385998.tar.gz | |
avformat/oggparseogm: Check lb against psize
No testcase, this was found during code review
Found-by: Matt Wolenetz <wolenetz@google.com>
Reviewed-by: Matt Wolenetz <wolenetz@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/oggparseogm.c')
| -rw-r--r-- | libavformat/oggparseogm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/oggparseogm.c b/libavformat/oggparseogm.c index 4b4edf26ca..a07453760b 100644 --- a/libavformat/oggparseogm.c +++ b/libavformat/oggparseogm.c @@ -176,6 +176,9 @@ ogm_packet(AVFormatContext *s, int idx) os->pflags |= AV_PKT_FLAG_KEY; lb = ((*p & 2) << 1) | ((*p >> 6) & 3); + if (os->psize < lb + 1) + return AVERROR_INVALIDDATA; + os->pstart += lb + 1; os->psize -= lb + 1; |