| commit | a31edb2059ed4e498f9aa8230c734b59d0ad797a | [log] [tgz] |
|---|---|---|
| author | Christoph Hellwig <hch@lst.de> | Tue Jul 28 18:38:36 2020 +0200 |
| committer | David S. Miller <davem@davemloft.net> | Tue Jul 28 13:43:40 2020 -0700 |
| tree | 050f16554295c22db098bb4e81021e21d2718c5f | |
| parent | d3c48151512922dd35f1f393b30b9138e4441d14 [diff] |
net: improve the user pointer check in init_user_sockptr
Make sure not just the pointer itself but the whole range lies in
the user address space. For that pass the length and then use
the access_ok helper to do the check.
Fixes: 6d04fe15f78a ("net: optimize the sockptr_t for unified kernel/user address spaces")
Reported-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>