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xfrm: Allow transport-mode states with AF_UNSPEC selector

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[ 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: 13996378e6 ("[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>
This commit is contained in:
Herbert Xu 2023-02-21 13:54:00 +08:00 committed by Greg Kroah-Hartman
parent 4008fb9ad4
commit c9900d1d86
1 changed files with 0 additions and 3 deletions
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3
net/xfrm/xfrm_state.c
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@ -2511,9 +2511,6 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload)
if (inner_mode == NULL) if (inner_mode == NULL)
goto error; goto error;
if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL))
goto error;
x->inner_mode = *inner_mode; x->inner_mode = *inner_mode;
if (x->props.family == AF_INET) if (x->props.family == AF_INET)