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net/nfc/rawsock.c: fix a permission check bug

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[ Upstream commit 8ab78863e9eff11910e1ac8bcf478060c29b379e ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jeimon
2021-05-08 11:52:30 +08:00
committed by Greg Kroah-Hartman
parent 584b2c7ce2
commit 1e5cab5020
1 changed files with 1 additions and 1 deletions
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net/nfc/rawsock.c
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@@ -329,7 +329,7 @@ static int rawsock_create(struct net *net, struct socket *sock,
return -ESOCKTNOSUPPORT; return -ESOCKTNOSUPPORT;
if (sock->type == SOCK_RAW) { if (sock->type == SOCK_RAW) {
if (!capable(CAP_NET_RAW)) if (!ns_capable(net->user_ns, CAP_NET_RAW))
return -EPERM; return -EPERM;
sock->ops = &rawsock_raw_ops; sock->ops = &rawsock_raw_ops;
} else { } else {