This is a note to let you know that I've just added the patch titled pptp: verify sockaddr_len in pptp_bind() and pptp_connect() to the 4.1-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: pptp-verify-sockaddr_len-in-pptp_bind-and-pptp_connect.patch and it can be found in the queue-4.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Wed Dec 30 19:52:45 PST 2015 From: WANG Cong <xiyou.wangcong@xxxxxxxxx> Date: Mon, 14 Dec 2015 13:48:36 -0800 Subject: pptp: verify sockaddr_len in pptp_bind() and pptp_connect() From: WANG Cong <xiyou.wangcong@xxxxxxxxx> [ Upstream commit 09ccfd238e5a0e670d8178cf50180ea81ae09ae1 ] Reported-by: Dmitry Vyukov <dvyukov@xxxxxxxxx> Signed-off-by: Cong Wang <xiyou.wangcong@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/ppp/pptp.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/net/ppp/pptp.c +++ b/drivers/net/ppp/pptp.c @@ -420,6 +420,9 @@ static int pptp_bind(struct socket *sock struct pptp_opt *opt = &po->proto.pptp; int error = 0; + if (sockaddr_len < sizeof(struct sockaddr_pppox)) + return -EINVAL; + lock_sock(sk); opt->src_addr = sp->sa_addr.pptp; @@ -441,6 +444,9 @@ static int pptp_connect(struct socket *s struct flowi4 fl4; int error = 0; + if (sockaddr_len < sizeof(struct sockaddr_pppox)) + return -EINVAL; + if (sp->sa_protocol != PX_PROTO_PPTP) return -EINVAL; Patches currently in stable-queue which might be from xiyou.wangcong@xxxxxxxxx are queue-4.1/pptp-verify-sockaddr_len-in-pptp_bind-and-pptp_connect.patch queue-4.1/net-check-both-type-and-procotol-for-tcp-sockets.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html