summaryrefslogtreecommitdiff
path: root/net/ipv6/xfrm6_tunnel.c
diff options
context:
space:
mode:
authorCong Wang <xiyou.wangcong@gmail.com>2019-03-23 02:26:19 +0300
committerSteffen Klassert <steffen.klassert@secunet.com>2019-03-26 10:35:36 +0300
commitdbb2483b2a46fbaf833cfb5deb5ed9cace9c7399 (patch)
treec6e1c958e3d59c14e1c3b6d1dfa3a95df4a6d8e0 /net/ipv6/xfrm6_tunnel.c
parent01ce31c57b3f07c91c9d45bbaf126124cce83a5d (diff)
downloadlinux-dbb2483b2a46fbaf833cfb5deb5ed9cace9c7399.tar.xz
xfrm: clean up xfrm protocol checks
In commit 6a53b7593233 ("xfrm: check id proto in validate_tmpl()") I introduced a check for xfrm protocol, but according to Herbert IPSEC_PROTO_ANY should only be used as a wildcard for lookup, so it should be removed from validate_tmpl(). And, IPSEC_PROTO_ANY is expected to only match 3 IPSec-specific protocols, this is why xfrm_state_flush() could still miss IPPROTO_ROUTING, which leads that those entries are left in net->xfrm.state_all before exit net. Fix this by replacing IPSEC_PROTO_ANY with zero. This patch also extracts the check from validate_tmpl() to xfrm_id_proto_valid() and uses it in parse_ipsecrequest(). With this, no other protocols should be added into xfrm. Fixes: 6a53b7593233 ("xfrm: check id proto in validate_tmpl()") Reported-by: syzbot+0bf0519d6e0de15914fe@syzkaller.appspotmail.com Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv6/xfrm6_tunnel.c')
-rw-r--r--net/ipv6/xfrm6_tunnel.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
index 12cb3aa990af..d9e5f6808811 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -345,7 +345,7 @@ static void __net_exit xfrm6_tunnel_net_exit(struct net *net)
unsigned int i;
xfrm_flush_gc();
- xfrm_state_flush(net, IPSEC_PROTO_ANY, false, true);
+ xfrm_state_flush(net, 0, false, true);
for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++)
WARN_ON_ONCE(!hlist_empty(&xfrm6_tn->spi_byaddr[i]));