This is a note to let you know that I've just added the patch titled phonet: refcount leak in pep_sock_accep to the 4.19-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: phonet-refcount-leak-in-pep_sock_accep.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From bcd0f93353326954817a4f9fa55ec57fb38acbb0 Mon Sep 17 00:00:00 2001 From: Hangyu Hua <hbh25y@xxxxxxxxx> Date: Thu, 9 Dec 2021 16:28:39 +0800 Subject: phonet: refcount leak in pep_sock_accep From: Hangyu Hua <hbh25y@xxxxxxxxx> commit bcd0f93353326954817a4f9fa55ec57fb38acbb0 upstream. sock_hold(sk) is invoked in pep_sock_accept(), but __sock_put(sk) is not invoked in subsequent failure branches(pep_accept_conn() != 0). Signed-off-by: Hangyu Hua <hbh25y@xxxxxxxxx> Link: https://lore.kernel.org/r/20211209082839.33985-1-hbh25y@xxxxxxxxx Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx> Signed-off-by: Aayush Agarwal <aayush.a.agarwal@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/phonet/pep.c | 1 + 1 file changed, 1 insertion(+) --- a/net/phonet/pep.c +++ b/net/phonet/pep.c @@ -881,6 +881,7 @@ static struct sock *pep_sock_accept(stru err = pep_accept_conn(newsk, skb); if (err) { + __sock_put(sk); sock_put(newsk); newsk = NULL; goto drop; Patches currently in stable-queue which might be from hbh25y@xxxxxxxxx are queue-4.19/phonet-refcount-leak-in-pep_sock_accep.patch