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Diffstat (limited to 'net/xfrm/xfrm_user.c')
-rw-r--r--net/xfrm/xfrm_user.c85
1 files changed, 37 insertions, 48 deletions
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index f964d4c00ffb..2f7ddc3a59b4 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -32,11 +32,6 @@
#include <linux/in6.h>
#endif
-static inline int aead_len(struct xfrm_algo_aead *alg)
-{
- return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
-}
-
static int verify_one_alg(struct nlattr **attrs, enum xfrm_attr_type_t type)
{
struct nlattr *rt = attrs[type];
@@ -181,7 +176,9 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
attrs[XFRMA_ALG_AEAD] ||
attrs[XFRMA_ALG_CRYPT] ||
attrs[XFRMA_ALG_COMP] ||
- attrs[XFRMA_TFCPAD])
+ attrs[XFRMA_TFCPAD] ||
+ (ntohl(p->id.spi) >= 0x10000))
+
goto out;
break;
@@ -600,7 +597,7 @@ static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
int err;
struct km_event c;
kuid_t loginuid = audit_get_loginuid(current);
- u32 sessionid = audit_get_sessionid(current);
+ unsigned int sessionid = audit_get_sessionid(current);
u32 sid;
err = verify_newsa_info(p, attrs);
@@ -679,7 +676,7 @@ static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
struct km_event c;
struct xfrm_usersa_id *p = nlmsg_data(nlh);
kuid_t loginuid = audit_get_loginuid(current);
- u32 sessionid = audit_get_sessionid(current);
+ unsigned int sessionid = audit_get_sessionid(current);
u32 sid;
x = xfrm_user_state_lookup(net, p, attrs, &err);
@@ -877,7 +874,10 @@ static int dump_one_state(struct xfrm_state *x, int count, void *ptr)
static int xfrm_dump_sa_done(struct netlink_callback *cb)
{
struct xfrm_state_walk *walk = (struct xfrm_state_walk *) &cb->args[1];
- xfrm_state_walk_done(walk);
+ struct sock *sk = cb->skb->sk;
+ struct net *net = sock_net(sk);
+
+ xfrm_state_walk_done(walk, net);
return 0;
}
@@ -1074,29 +1074,6 @@ out_noput:
return err;
}
-static int verify_userspi_info(struct xfrm_userspi_info *p)
-{
- switch (p->info.id.proto) {
- case IPPROTO_AH:
- case IPPROTO_ESP:
- break;
-
- case IPPROTO_COMP:
- /* IPCOMP spi is 16-bits. */
- if (p->max >= 0x10000)
- return -EINVAL;
- break;
-
- default:
- return -EINVAL;
- }
-
- if (p->min > p->max)
- return -EINVAL;
-
- return 0;
-}
-
static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
struct nlattr **attrs)
{
@@ -1111,7 +1088,7 @@ static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
struct xfrm_mark m;
p = nlmsg_data(nlh);
- err = verify_userspi_info(p);
+ err = verify_spi_info(p->info.id.proto, p->min, p->max);
if (err)
goto out_noput;
@@ -1189,6 +1166,8 @@ static int verify_policy_type(u8 type)
static int verify_newpolicy_info(struct xfrm_userpolicy_info *p)
{
+ int ret;
+
switch (p->share) {
case XFRM_SHARE_ANY:
case XFRM_SHARE_SESSION:
@@ -1224,7 +1203,13 @@ static int verify_newpolicy_info(struct xfrm_userpolicy_info *p)
return -EINVAL;
}
- return verify_policy_dir(p->dir);
+ ret = verify_policy_dir(p->dir);
+ if (ret)
+ return ret;
+ if (p->index && ((p->index & XFRM_POLICY_MAX) != p->dir))
+ return -EINVAL;
+
+ return 0;
}
static int copy_from_user_sec_ctx(struct xfrm_policy *pol, struct nlattr **attrs)
@@ -1236,7 +1221,7 @@ static int copy_from_user_sec_ctx(struct xfrm_policy *pol, struct nlattr **attrs
return 0;
uctx = nla_data(rt);
- return security_xfrm_policy_alloc(&pol->security, uctx);
+ return security_xfrm_policy_alloc(&pol->security, uctx, GFP_KERNEL);
}
static void copy_templates(struct xfrm_policy *xp, struct xfrm_user_tmpl *ut,
@@ -1405,7 +1390,7 @@ static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
int err;
int excl;
kuid_t loginuid = audit_get_loginuid(current);
- u32 sessionid = audit_get_sessionid(current);
+ unsigned int sessionid = audit_get_sessionid(current);
u32 sid;
err = verify_newpolicy_info(p);
@@ -1547,8 +1532,9 @@ static int dump_one_policy(struct xfrm_policy *xp, int dir, int count, void *ptr
static int xfrm_dump_policy_done(struct netlink_callback *cb)
{
struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *) &cb->args[1];
+ struct net *net = sock_net(cb->skb->sk);
- xfrm_policy_walk_done(walk);
+ xfrm_policy_walk_done(walk, net);
return 0;
}
@@ -1640,7 +1626,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
if (rt) {
struct xfrm_user_sec_ctx *uctx = nla_data(rt);
- err = security_xfrm_policy_alloc(&ctx, uctx);
+ err = security_xfrm_policy_alloc(&ctx, uctx, GFP_KERNEL);
if (err)
return err;
}
@@ -1663,7 +1649,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
}
} else {
kuid_t loginuid = audit_get_loginuid(current);
- u32 sessionid = audit_get_sessionid(current);
+ unsigned int sessionid = audit_get_sessionid(current);
u32 sid;
security_task_getsecid(current, &sid);
@@ -1740,11 +1726,11 @@ static int build_aevent(struct sk_buff *skb, struct xfrm_state *x, const struct
return -EMSGSIZE;
id = nlmsg_data(nlh);
- memcpy(&id->sa_id.daddr, &x->id.daddr,sizeof(x->id.daddr));
+ memcpy(&id->sa_id.daddr, &x->id.daddr, sizeof(x->id.daddr));
id->sa_id.spi = x->id.spi;
id->sa_id.family = x->props.family;
id->sa_id.proto = x->id.proto;
- memcpy(&id->saddr, &x->props.saddr,sizeof(x->props.saddr));
+ memcpy(&id->saddr, &x->props.saddr, sizeof(x->props.saddr));
id->reqid = x->props.reqid;
id->flags = c->data.aevent;
@@ -1833,7 +1819,7 @@ static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
struct net *net = sock_net(skb->sk);
struct xfrm_state *x;
struct km_event c;
- int err = - EINVAL;
+ int err = -EINVAL;
u32 mark = 0;
struct xfrm_mark m;
struct xfrm_aevent_id *p = nlmsg_data(nlh);
@@ -1942,7 +1928,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
if (rt) {
struct xfrm_user_sec_ctx *uctx = nla_data(rt);
- err = security_xfrm_policy_alloc(&ctx, uctx);
+ err = security_xfrm_policy_alloc(&ctx, uctx, GFP_KERNEL);
if (err)
return err;
}
@@ -1959,7 +1945,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
err = 0;
if (up->hard) {
kuid_t loginuid = audit_get_loginuid(current);
- u32 sessionid = audit_get_sessionid(current);
+ unsigned int sessionid = audit_get_sessionid(current);
u32 sid;
security_task_getsecid(current, &sid);
@@ -2002,7 +1988,7 @@ static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
if (ue->hard) {
kuid_t loginuid = audit_get_loginuid(current);
- u32 sessionid = audit_get_sessionid(current);
+ unsigned int sessionid = audit_get_sessionid(current);
u32 sid;
security_task_getsecid(current, &sid);
@@ -2129,6 +2115,7 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
u8 type;
int err;
int n = 0;
+ struct net *net = sock_net(skb->sk);
if (attrs[XFRMA_MIGRATE] == NULL)
return -EINVAL;
@@ -2146,7 +2133,7 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
if (!n)
return 0;
- xfrm_migrate(&pi->sel, pi->dir, type, m, n, kmp);
+ xfrm_migrate(&pi->sel, pi->dir, type, m, n, kmp, net);
return 0;
}
@@ -2394,9 +2381,11 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
static void xfrm_netlink_rcv(struct sk_buff *skb)
{
- mutex_lock(&xfrm_cfg_mutex);
+ struct net *net = sock_net(skb->sk);
+
+ mutex_lock(&net->xfrm.xfrm_cfg_mutex);
netlink_rcv_skb(skb, &xfrm_user_rcv_msg);
- mutex_unlock(&xfrm_cfg_mutex);
+ mutex_unlock(&net->xfrm.xfrm_cfg_mutex);
}
static inline size_t xfrm_expire_msgsize(void)
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.