1 files changed, 37 insertions, 5 deletions

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 7c36cc1f3d79..8cd6c8129004 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -11,6 +11,7 @@
  *
  */
 
+#include <linux/compat.h>
 #include <linux/crypto.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -282,6 +283,10 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
 
 	err = 0;
 
+	if (attrs[XFRMA_MTIMER_THRESH])
+		if (!attrs[XFRMA_ENCAP])
+			err = -EINVAL;
+
 out:
 	return err;
 }
@@ -521,6 +526,7 @@ static void xfrm_update_ae_params(struct xfrm_state *x, struct nlattr **attrs,
 	struct nlattr *lt = attrs[XFRMA_LTIME_VAL];
 	struct nlattr *et = attrs[XFRMA_ETIMER_THRESH];
 	struct nlattr *rt = attrs[XFRMA_REPLAY_THRESH];
+	struct nlattr *mt = attrs[XFRMA_MTIMER_THRESH];
 
 	if (re) {
 		struct xfrm_replay_state_esn *replay_esn;
@@ -552,6 +558,9 @@ static void xfrm_update_ae_params(struct xfrm_state *x, struct nlattr **attrs,
 
 	if (rt)
 		x->replay_maxdiff = nla_get_u32(rt);
+
+	if (mt)
+		x->mapping_maxage = nla_get_u32(mt);
 }
 
 static void xfrm_smark_init(struct nlattr **attrs, struct xfrm_mark *m)
@@ -621,8 +630,13 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
 
 	xfrm_smark_init(attrs, &x->props.smark);
 
-	if (attrs[XFRMA_IF_ID])
+	if (attrs[XFRMA_IF_ID]) {
 		x->if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
+		if (!x->if_id) {
+			err = -EINVAL;
+			goto error;
+		}
+	}
 
 	err = __xfrm_init_state(x, false, attrs[XFRMA_OFFLOAD_DEV]);
 	if (err)
@@ -1024,8 +1038,13 @@ static int copy_to_user_state_extra(struct xfrm_state *x,
 		if (ret)
 			goto out;
 	}
-	if (x->security)
+	if (x->security) {
 		ret = copy_sec_ctx(x->security, skb);
+		if (ret)
+			goto out;
+	}
+	if (x->mapping_maxage)
+		ret = nla_put_u32(skb, XFRMA_MTIMER_THRESH, x->mapping_maxage);
 out:
 	return ret;
 }
@@ -1413,8 +1432,13 @@ static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
 
 	mark = xfrm_mark_get(attrs, &m);
 
-	if (attrs[XFRMA_IF_ID])
+	if (attrs[XFRMA_IF_ID]) {
 		if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
+		if (!if_id) {
+			err = -EINVAL;
+			goto out_noput;
+		}
+	}
 
 	if (p->info.seq) {
 		x = xfrm_find_acq_byseq(net, mark, p->info.seq);
@@ -1727,8 +1751,13 @@ static struct xfrm_policy *xfrm_policy_construct(struct net *net, struct xfrm_us
 
 	xfrm_mark_get(attrs, &xp->mark);
 
-	if (attrs[XFRMA_IF_ID])
+	if (attrs[XFRMA_IF_ID]) {
 		xp->if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
+		if (!xp->if_id) {
+			err = -EINVAL;
+			goto error;
+		}
+	}
 
 	return xp;
  error:
@@ -3058,7 +3087,7 @@ static inline unsigned int xfrm_sa_len(struct xfrm_state *x)
 	if (x->props.extra_flags)
 		l += nla_total_size(sizeof(x->props.extra_flags));
 	if (x->xso.dev)
-		 l += nla_total_size(sizeof(x->xso));
+		 l += nla_total_size(sizeof(struct xfrm_user_offload));
 	if (x->props.smark.v | x->props.smark.m) {
 		l += nla_total_size(sizeof(x->props.smark.v));
 		l += nla_total_size(sizeof(x->props.smark.m));
@@ -3069,6 +3098,9 @@ static inline unsigned int xfrm_sa_len(struct xfrm_state *x)
 	/* Must count x->lastused as it may become non-zero behind our back. */
 	l += nla_total_size_64bit(sizeof(u64));
 
+	if (x->mapping_maxage)
+		l += nla_total_size(sizeof(x->mapping_maxage));
+
 	return l;
 }