From: WANG Cong <xiyou.wangcong@xxxxxxxxx> 3.4.111-rc1 review patch. If anyone has any objections, please let me know. ------------------ commit 09ccfd238e5a0e670d8178cf50180ea81ae09ae1 upstream. 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: Zefan Li <lizefan@xxxxxxxxxx> --- drivers/net/ppp/pptp.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c index 9f047a0..5a13ad0 100644 --- a/drivers/net/ppp/pptp.c +++ b/drivers/net/ppp/pptp.c @@ -420,6 +420,9 @@ static int pptp_bind(struct socket *sock, struct sockaddr *uservaddr, 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 *sock, struct sockaddr *uservaddr, struct flowi4 fl4; int error = 0; + if (sockaddr_len < sizeof(struct sockaddr_pppox)) + return -EINVAL; + if (sp->sa_protocol != PX_PROTO_PPTP) return -EINVAL; -- 1.9.1 -- 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