Patch "net: Use ns_capable_noaudit() when determining net sysctl permissions" has been added to the 3.14-stable tree

This is a note to let you know that I've just added the patch titled

net: Use ns_capable_noaudit() when determining net sysctl permissions

to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
net-use-ns_capable_noaudit-when-determining-net-sysctl-permissions.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Tyler Hicks <[email protected]>
Date: Thu, 2 Jun 2016 23:43:22 -0500
Subject: net: Use ns_capable_noaudit() when determining net sysctl permissions

From: Tyler Hicks <[email protected]>

commit d6e0d306449bcb5fa3c80e7a3edf11d45abf9ae9 upstream.

The capability check should not be audited since it is only being used to determine the inode permissions. A failed check does not indicate a violation of security policy but, when an LSM is enabled, a denial audit message was being generated.

The denial audit message caused confusion for some application authors because root-running Go applications always triggered the denial. To prevent this confusion, the capability check in net_ctl_permissions() is switched to the noaudit variant.

---
 net/sysctl_net.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -46,7 +46,7 @@ static int net_ctl_permissions(struct ct
 	kgid_t root_gid = make_kgid(net->user_ns, 0);
 
 	/* Allow network administrator to have same access as root. */
-	if (ns_capable(net->user_ns, CAP_NET_ADMIN) ||
+	if (ns_capable_noaudit(net->user_ns, CAP_NET_ADMIN) ||
 	    uid_eq(root_uid, current_euid())) {
 		int mode = (table->mode >> 6) & 7;
 		return (mode << 6) | (mode << 3) | mode;

Patches currently in stable-queue which might be from [email protected] are

queue-3.14/net-use-ns_capable_noaudit-when-determining-net-sysctl-permissions.patch