From: Herbert Xu herbert@gondor.apana.org.au
[ Upstream commit c276a706ea1f51cf9723ed8484feceaf961b8f89 ]
xfrm state selectors are matched against the inner-most flow which can be of any address family. Therefore middle states in nested configurations need to carry a wildcard selector in order to work at all.
However, this is currently forbidden for transport-mode states.
Fix this by removing the unnecessary check.
Fixes: 13996378e658 ("[IPSEC]: Rename mode to outer_mode and add inner_mode") Reported-by: David George David.George@sophos.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Steffen Klassert steffen.klassert@secunet.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/xfrm/xfrm_state.c | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 0f88cb6fc3c22..2f4cf976b59a3 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -2649,11 +2649,6 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload, goto error; }
- if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL)) { - NL_SET_ERR_MSG(extack, "Only tunnel modes can accommodate an AF_UNSPEC selector"); - goto error; - } - x->inner_mode = *inner_mode;
if (x->props.family == AF_INET)