diff options
Diffstat (limited to 'net/xfrm/xfrm_user.c')
-rw-r--r-- | net/xfrm/xfrm_user.c | 47 |
1 files changed, 33 insertions, 14 deletions
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 30593cadd428..0f6285f9674e 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -120,22 +120,17 @@ static inline int verify_replay(struct xfrm_usersa_info *p, struct nlattr *rt = attrs[XFRMA_REPLAY_ESN_VAL]; struct xfrm_replay_state_esn *rs; - if (p->flags & XFRM_STATE_ESN) { - if (!rt) - return -EINVAL; - - rs = nla_data(rt); + if (!rt) + return (p->flags & XFRM_STATE_ESN) ? -EINVAL : 0; - if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8) - return -EINVAL; + rs = nla_data(rt); - if (nla_len(rt) < xfrm_replay_state_esn_len(rs) && - nla_len(rt) != sizeof(*rs)) - return -EINVAL; - } + if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8) + return -EINVAL; - if (!rt) - return 0; + if (nla_len(rt) < xfrm_replay_state_esn_len(rs) && + nla_len(rt) != sizeof(*rs)) + return -EINVAL; /* As only ESP and AH support ESN feature. */ if ((p->id.proto != IPPROTO_ESP) && (p->id.proto != IPPROTO_AH)) @@ -1353,11 +1348,14 @@ static void copy_templates(struct xfrm_policy *xp, struct xfrm_user_tmpl *ut, static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family) { + u16 prev_family; int i; if (nr > XFRM_MAX_DEPTH) return -EINVAL; + prev_family = family; + for (i = 0; i < nr; i++) { /* We never validated the ut->family value, so many * applications simply leave it at zero. The check was @@ -1369,6 +1367,12 @@ static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family) if (!ut[i].family) ut[i].family = family; + if ((ut[i].mode == XFRM_MODE_TRANSPORT) && + (ut[i].family != prev_family)) + return -EINVAL; + + prev_family = ut[i].family; + switch (ut[i].family) { case AF_INET: break; @@ -1379,6 +1383,21 @@ static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family) default: return -EINVAL; } + + switch (ut[i].id.proto) { + case IPPROTO_AH: + case IPPROTO_ESP: + case IPPROTO_COMP: +#if IS_ENABLED(CONFIG_IPV6) + case IPPROTO_ROUTING: + case IPPROTO_DSTOPTS: +#endif + case IPSEC_PROTO_ANY: + break; + default: + return -EINVAL; + } + } return 0; @@ -2436,7 +2455,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) #ifdef CONFIG_COMPAT if (is_compat_task()) - return -ENOTSUPP; + return -EOPNOTSUPP; #endif type = nlh->nlmsg_type; |