net: Fix ns_capable check in sock_diag_put_filterinfo
[ Upstream commit 78541c1dc60b65ecfce5a6a096fc260219d6784e ]
The caller needs capabilities on the namespace being queried, not on
their own namespace. This is a security bug, although it likely has
only a minor impact.
Cc: stable@vger.kernel.org
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/net/packet/diag.c b/net/packet/diag.c
index a9584a2..ec8b6e8 100644
--- a/net/packet/diag.c
+++ b/net/packet/diag.c
@@ -171,7 +171,7 @@
goto out_nlmsg_trim;
if ((req->pdiag_show & PACKET_SHOW_FILTER) &&
- sock_diag_put_filterinfo(user_ns, sk, skb, PACKET_DIAG_FILTER))
+ sock_diag_put_filterinfo(sk, skb, PACKET_DIAG_FILTER))
goto out_nlmsg_trim;
return nlmsg_end(skb, nlh);