linux-kernel - Re: [stable] [PATCH] [0/106] 2.6.35.13 longterm review

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Date:	Tue, 26 Apr 2011 20:21:50 -0400
From:	Chuck Ebbert <cebbert@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, stable@...nel.org,
	tim.bird@...sony.com
Subject: Re: [stable] [PATCH] [0/106] 2.6.35.13 longterm review

On Tue, 26 Apr 2011 14:12:37 -0700 (PDT)
Andi Kleen <andi@...stfloor.org> wrote:

> 

Also please revert the patch "fix-cred-leak-in-af_netlink" from 2.6.35.12.
The proper fix was "af_netlink-add-needed-scm_destroy-after-scm_send" which
was also added in that release. Here's a revert patch:

--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1330,16 +1330,12 @@
 		return err;
 
 	if (msg->msg_namelen) {
+		if (addr->nl_family != AF_NETLINK)
+			return -EINVAL;
-		if (addr->nl_family != AF_NETLINK) {
-			err = -EINVAL;
-			goto out;
-		}
 		dst_pid = addr->nl_pid;
 		dst_group = ffs(addr->nl_groups);
+		if (dst_group && !netlink_capable(sock, NL_NONROOT_SEND))
+			return -EPERM;
-		if (dst_group && !netlink_capable(sock, NL_NONROOT_SEND)) {
-			err = -EPERM;
-			goto out;
-		}
 	} else {
 		dst_pid = nlk->dst_pid;
 		dst_group = nlk->dst_group;
@@ -1391,8 +1387,6 @@
 	err = netlink_unicast(sk, skb, dst_pid, msg->msg_flags&MSG_DONTWAIT);
 
 out:
-	scm_destroy(siocb->scm);
-	siocb->scm = NULL;
 	return err;
 }
 
_
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