This is a note to let you know that I've just added the patch titled
af_unix: dont send SCM_CREDENTIAL when dest socket is NULL
to the 3.4-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:
af_unix-dont-send-scm_credential-when-dest-socket-is-null.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0548cb9cbc64d221fb3851f7c8a0ccb8bc095acb Mon Sep 17 00:00:00 2001
From: dingtianhong <dingtianhong@xxxxxxxxxx>
Date: Mon, 25 Mar 2013 17:02:04 +0000
Subject: af_unix: dont send SCM_CREDENTIAL when dest socket is NULL
From: dingtianhong <dingtianhong@xxxxxxxxxx>
[ Upstream commit 14134f6584212d585b310ce95428014b653dfaf6 ]
SCM_SCREDENTIALS should apply to write() syscalls only either source or destination
socket asserted SOCK_PASSCRED. The original implememtation in maybe_add_creds is wrong,
and breaks several LSB testcases ( i.e. /tset/LSB.os/netowkr/recvfrom/T.recvfrom).
Origionally-authored-by: Karel Srot <ksrot@xxxxxxxxxx>
Signed-off-by: Ding Tianhong <dingtianhong@xxxxxxxxxx>
Acked-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/unix/af_unix.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1414,8 +1414,8 @@ static void maybe_add_creds(struct sk_bu
if (UNIXCB(skb).cred)
return;
if (test_bit(SOCK_PASSCRED, &sock->flags) ||
- !other->sk_socket ||
- test_bit(SOCK_PASSCRED, &other->sk_socket->flags)) {
+ (other->sk_socket &&
+ test_bit(SOCK_PASSCRED, &other->sk_socket->flags))) {
UNIXCB(skb).pid = get_pid(task_tgid(current));
UNIXCB(skb).cred = get_current_cred();
}
Patches currently in stable-queue which might be from dingtianhong@xxxxxxxxxx are
queue-3.4/af_unix-dont-send-scm_credential-when-dest-socket-is-null.patch
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