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

[ Upstream commit 8ab7886 ] 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 <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Sasha Levin <[email protected]>
multipath-tcp · Jun 16, 2021 · 38cb2e2 · 38cb2e2
1 parent 7e6d9c4
commit 38cb2e2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
@@ -345,7 +345,7 @@ 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 {