From 2f30ea5090cbc57ea573cdc66421264b3de3fb0a Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Thu, 8 Sep 2016 18:09:57 +0200 Subject: [PATCH] xfrm_user: propagate sec ctx allocation errors When we fail to attach the security context in xfrm_state_construct() we'll return 0 as error value which, in turn, will wrongly claim success to userland when, in fact, we won't be adding / updating the XFRM state. This is a regression introduced by commit fd21150a0fe1 ("[XFRM] netlink: Inline attach_encap_tmpl(), attach_sec_ctx(), and attach_one_addr()"). Fix it by propagating the error returned by security_xfrm_state_alloc() in this case. Fixes: fd21150a0fe1 ("[XFRM] netlink: Inline attach_encap_tmpl()...") Signed-off-by: Mathias Krause Cc: Thomas Graf Signed-off-by: Steffen Klassert --- net/xfrm/xfrm_user.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index cb65d916a345..08892091cfe3 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -581,9 +581,12 @@ static struct xfrm_state *xfrm_state_construct(struct net *net, if (err) goto error; - if (attrs[XFRMA_SEC_CTX] && - security_xfrm_state_alloc(x, nla_data(attrs[XFRMA_SEC_CTX]))) - goto error; + if (attrs[XFRMA_SEC_CTX]) { + err = security_xfrm_state_alloc(x, + nla_data(attrs[XFRMA_SEC_CTX])); + if (err) + goto error; + } if ((err = xfrm_alloc_replay_state_esn(&x->replay_esn, &x->preplay_esn, attrs[XFRMA_REPLAY_ESN_VAL])))