diff options
Diffstat (limited to 'net/xfrm/xfrm_input.c')
| -rw-r--r-- | net/xfrm/xfrm_input.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c index 161f535c8b94..71b42de6e3c9 100644 --- a/net/xfrm/xfrm_input.c +++ b/net/xfrm/xfrm_input.c @@ -466,6 +466,11 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type) if (encap_type < 0 || (xo && xo->flags & XFRM_GRO)) { x = xfrm_input_state(skb); + if (unlikely(x->dir && x->dir != XFRM_SA_DIR_IN)) { + XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEDIRERROR); + goto drop; + } + if (unlikely(x->km.state != XFRM_STATE_VALID)) { if (x->km.state == XFRM_STATE_ACQ) XFRM_INC_STATS(net, LINUX_MIB_XFRMACQUIREERROR); @@ -571,6 +576,12 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type) goto drop; } + if (unlikely(x->dir && x->dir != XFRM_SA_DIR_IN)) { + XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEDIRERROR); + xfrm_state_put(x); + goto drop; + } + skb->mark = xfrm_smark_get(skb->mark, x); sp->xvec[sp->len++] = x; |