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| author | Matt Wolenetz <wolenetz@google.com> | 2016-12-14 15:24:42 -0800 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-02-08 03:31:01 +0100 |
| commit | fd30e4d57fe5841385f845440688505b88c0f4a9 (patch) | |
| tree | ed1feed6d70bb38162adf92626fddeb5f41a264d | |
| parent | 1835ed19bb16f2963ef566560a2b4faf3d754fd2 (diff) | |
| download | ffmpeg-fd30e4d57fe5841385f845440688505b88c0f4a9.tar.gz | |
lavf/mov.c: Avoid heap allocation wrap in mov_read_hdlr
Core of patch is from paul@paulmehta.com
Reference https://crbug.com/643950
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Check value reduced as the code does not support larger lengths
| -rw-r--r-- | libavformat/mov.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c index 6fd43a0a4e..8c54539c5f 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -742,6 +742,8 @@ static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom) title_size = atom.size - 24; if (title_size > 0) { + if (title_size > FFMIN(INT_MAX, SIZE_MAX-1)) + return AVERROR_INVALIDDATA; title_str = av_malloc(title_size + 1); /* Add null terminator */ if (!title_str) return AVERROR(ENOMEM); |