hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

pptp: verify sockaddr_len in pptp_bind() and pptp_connect() 

Reported-by: Dmitry Vyukov <dvyukov@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong 2015-12-14 13:48:36 -08:00 committed by David S. Miller
parent 54499969c9
commit 09ccfd238e
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/ppp/pptp.c
View File

@ -419,6 +419,9 @@ 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;
@ -440,6 +443,9 @@ 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;