diff options
| author | Jeimon <jjjinmeng.zhou@gmail.com> | 2021-05-08 11:52:30 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-05-10 14:21:02 -0700 |
| commit | 8ab78863e9eff11910e1ac8bcf478060c29b379e (patch) | |
| tree | 4cd867763afd58d39079a7e862f1813b3dd52b73 | |
| parent | b741596468b010af2846b75f5e75a842ce344a6e (diff) | |
| download | linux-8ab78863e9eff11910e1ac8bcf478060c29b379e.tar.gz linux-8ab78863e9eff11910e1ac8bcf478060c29b379e.tar.bz2 linux-8ab78863e9eff11910e1ac8bcf478060c29b379e.zip | |
net/nfc/rawsock.c: fix a permission check bug
The function rawsock_create() calls a privileged function sk_alloc(), which requires a ns-aware check to check net->user_ns, i.e., ns_capable(). However, the original code checks the init_user_ns using capable(). So we replace the capable() with ns_capable().
Signed-off-by: Jeimon <jjjinmeng.zhou@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/nfc/rawsock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c index 9c7eb8455ba8..5f1d438a0a23 100644 --- a/net/nfc/rawsock.c +++ b/net/nfc/rawsock.c @@ -329,7 +329,7 @@ static int rawsock_create(struct net *net, struct socket *sock, return -ESOCKTNOSUPPORT; if (sock->type == SOCK_RAW) { - if (!capable(CAP_NET_RAW)) + if (!ns_capable(net->user_ns, CAP_NET_RAW)) return -EPERM; sock->ops = &rawsock_raw_ops; } else { |