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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec

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Steffen Klassert says:

====================
pull request (net): ipsec 2017-05-23

1) Fix wrong header offset for esp4 udpencap packets.

2) Fix a stack access out of bounds when creating a bundle
   with sub policies. From Sabrina Dubroca.

3) Fix slab-out-of-bounds in pfkey due to an incorrect
   sadb_x_sec_len calculation.

4) We checked the wrong feature flags when taking down
   an interface with IPsec offload enabled.
   Fix from Ilan Tayari.

5) Copy the anti replay sequence numbers when doing a state
   migration, otherwise we get out of sync with the sequence
   numbers. Fix from Antony Antony.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2017-05-23 10:51:32 -04:00
commit 2f9bfd3399
6 changed files with 8 additions and 60 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
include/net/xfrm.h
View File

@ -979,10 +979,6 @@ struct xfrm_dst {
struct flow_cache_object flo;
struct xfrm_policy *pols[XFRM_POLICY_TYPE_MAX];
int num_pols, num_xfrms;
#ifdef CONFIG_XFRM_SUB_POLICY
struct flowi *origin;
struct xfrm_selector *partner;
#endif
u32 xfrm_genid;
u32 policy_genid;
u32 route_mtu_cached;
@ -998,12 +994,6 @@ static inline void xfrm_dst_destroy(struct xfrm_dst *xdst)
dst_release(xdst->route);
if (likely(xdst->u.dst.xfrm))
xfrm_state_put(xdst->u.dst.xfrm);
#ifdef CONFIG_XFRM_SUB_POLICY
kfree(xdst->origin);
xdst->origin = NULL;
kfree(xdst->partner);
xdst->partner = NULL;
#endif
}
#endif

5
net/ipv4/esp4.c
View File

@ -248,6 +248,7 @@ int esp_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *
u8 *tail;
u8 *vaddr;
int nfrags;
int esph_offset;
struct page *page;
struct sk_buff *trailer;
int tailen = esp->tailen;
@ -313,11 +314,13 @@ int esp_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info *
}
cow:
esph_offset = (unsigned char *)esp->esph - skb_transport_header(skb);
nfrags = skb_cow_data(skb, tailen, &trailer);
if (nfrags < 0)
goto out;
tail = skb_tail_pointer(trailer);
esp->esph = ip_esp_hdr(skb);
esp->esph = (struct ip_esp_hdr *)(skb_transport_header(skb) + esph_offset);
skip_cow:
esp_output_fill_trailer(tail, esp->tfclen, esp->plen, esp->proto);

2
net/key/af_key.c
View File

@ -3285,7 +3285,7 @@ static struct xfrm_policy *pfkey_compile_policy(struct sock *sk, int opt,
p += pol->sadb_x_policy_len*8;
sec_ctx = (struct sadb_x_sec_ctx *)p;
if (len < pol->sadb_x_policy_len*8 +
sec_ctx->sadb_x_sec_len) {
sec_ctx->sadb_x_sec_len*8) {
*dir = -EINVAL;
goto out;
}

2
net/xfrm/xfrm_device.c
View File

@ -170,7 +170,7 @@ static int xfrm_dev_feat_change(struct net_device *dev)
static int xfrm_dev_down(struct net_device *dev)
{
if (dev->hw_features & NETIF_F_HW_ESP)
if (dev->features & NETIF_F_HW_ESP)
xfrm_dev_state_flush(dev_net(dev), dev, true);
xfrm_garbage_collect(dev_net(dev));

47
net/xfrm/xfrm_policy.c
View File

@ -1797,43 +1797,6 @@ free_dst:
goto out;
}
#ifdef CONFIG_XFRM_SUB_POLICY
static int xfrm_dst_alloc_copy(void **target, const void *src, int size)
{
if (!*target) {
*target = kmalloc(size, GFP_ATOMIC);
if (!*target)
return -ENOMEM;
}
memcpy(*target, src, size);
return 0;
}
#endif
static int xfrm_dst_update_parent(struct dst_entry *dst,
const struct xfrm_selector *sel)
{
#ifdef CONFIG_XFRM_SUB_POLICY
struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
return xfrm_dst_alloc_copy((void **)&(xdst->partner),
sel, sizeof(*sel));
#else
return 0;
#endif
}
static int xfrm_dst_update_origin(struct dst_entry *dst,
const struct flowi *fl)
{
#ifdef CONFIG_XFRM_SUB_POLICY
struct xfrm_dst *xdst = (struct xfrm_dst *)dst;
return xfrm_dst_alloc_copy((void **)&(xdst->origin), fl, sizeof(*fl));
#else
return 0;
#endif
}
static int xfrm_expand_policies(const struct flowi *fl, u16 family,
struct xfrm_policy **pols,
int *num_pols, int *num_xfrms)
@ -1905,16 +1868,6 @@ xfrm_resolve_and_create_bundle(struct xfrm_policy **pols, int num_pols,
xdst = (struct xfrm_dst *)dst;
xdst->num_xfrms = err;
if (num_pols > 1)
err = xfrm_dst_update_parent(dst, &pols[1]->selector);
else
err = xfrm_dst_update_origin(dst, fl);
if (unlikely(err)) {
dst_free(dst);
XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTBUNDLECHECKERROR);
return ERR_PTR(err);
}
xdst->num_pols = num_pols;
memcpy(xdst->pols, pols, sizeof(struct xfrm_policy *) * num_pols);
xdst->policy_genid = atomic_read(&pols[0]->genid);

2
net/xfrm/xfrm_state.c
View File

@ -1383,6 +1383,8 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig)
x->curlft.add_time = orig->curlft.add_time;
x->km.state = orig->km.state;
x->km.seq = orig->km.seq;
x->replay = orig->replay;
x->preplay = orig->preplay;
return x;