Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.16 0881/1039] xfrm: fix dflt policy check when there is no policy configured | Date | Mon, 24 Jan 2022 19:44:30 +0100 |
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From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
commit ec3bb890817e4398f2d46e12e2e205495b116be9 upstream.
When there is no policy configured on the system, the default policy is checked in xfrm_route_forward. However, it was done with the wrong direction (XFRM_POLICY_FWD instead of XFRM_POLICY_OUT). The default policy for XFRM_POLICY_FWD was checked just before, with a call to xfrm[46]_policy_check().
CC: stable@vger.kernel.org Fixes: 2d151d39073a ("xfrm: Add possibility to set the default to block if we have no policy") Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- include/net/xfrm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -1167,7 +1167,7 @@ static inline int xfrm_route_forward(str { struct net *net = dev_net(skb->dev); - if (xfrm_default_allow(net, XFRM_POLICY_FWD)) + if (xfrm_default_allow(net, XFRM_POLICY_OUT)) return !net->xfrm.policy_count[XFRM_POLICY_OUT] || (skb_dst(skb)->flags & DST_NOXFRM) || __xfrm_route_forward(skb, family);
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