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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-12-14 17:26:11 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2015-06-10 02:13:07 +0200 |
| commit | 4e6706f851d388163a7cfe53529810ec8888d95d (patch) | |
| tree | 9cda574f10887414e003dbedf430a352c582fa30 | |
| parent | 32d24c8c05a9e12bc71412831b2a430b7e3f66e2 (diff) | |
| download | ffmpeg-4e6706f851d388163a7cfe53529810ec8888d95d.tar.gz | |
avformat/aviobuf: Check that avio_seek() target is non negative
Fixes out of array access
Suggested-by: Andrew Scherkus <scherkus@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit ed86dbd05d61363dc1c0d33f3267e2177c985fdd)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavformat/aviobuf.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c index 93a187b4aa..4c29baf5a7 100644 --- a/libavformat/aviobuf.c +++ b/libavformat/aviobuf.c @@ -217,6 +217,9 @@ int64_t avio_seek(AVIOContext *s, int64_t offset, int whence) return offset1; offset += offset1; } + if (offset < 0) + return AVERROR(EINVAL); + offset1 = offset - pos; if (!s->must_flush && (!s->direct || !s->seek) && offset1 >= 0 && offset1 <= (s->buf_end - s->buffer)) { |