netdev - [patch -mainline] af_key: more info leaks in pfkey messages

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Message-ID: <20130724103956.GA30345@elgon.mountain>
Date:	Wed, 24 Jul 2013 13:39:57 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Steffen Klassert <steffen.klassert@...unet.com>,
	Mathias Krause <minipli@...glemail.com>
Cc:	Herbert Xu <herbert@...dor.hengli.com.au>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch -mainline] af_key: more info leaks in pfkey messages

This is inspired by a5cc68f3d6 "af_key: fix info leaks in notify
messages".  There are some struct members which don't get initialized
and could disclose small amounts of private information.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
I'm at the "monkey see, monkey do" level of understanding this code so
let me know if I've missed something.

diff --git a/net/key/af_key.c b/net/key/af_key.c
index 456b262..e939d32 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -2081,6 +2081,7 @@ static int pfkey_xfrm_policy2msg(struct sk_buff *skb, const struct xfrm_policy *
 			pol->sadb_x_policy_type = IPSEC_POLICY_NONE;
 	}
 	pol->sadb_x_policy_dir = dir+1;
+	pol->sadb_x_policy_reserved = 0;
 	pol->sadb_x_policy_id = xp->index;
 	pol->sadb_x_policy_priority = xp->priority;
 
@@ -3137,7 +3138,9 @@ static int pfkey_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *t, struct
 	pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
 	pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
 	pol->sadb_x_policy_dir = XFRM_POLICY_OUT + 1;
+	pol->sadb_x_policy_reserved = 0;
 	pol->sadb_x_policy_id = xp->index;
+	pol->sadb_x_policy_priority = 0;
 
 	/* Set sadb_comb's. */
 	if (x->id.proto == IPPROTO_AH)
@@ -3525,6 +3528,7 @@ static int pfkey_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
 	pol->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
 	pol->sadb_x_policy_type = IPSEC_POLICY_IPSEC;
 	pol->sadb_x_policy_dir = dir + 1;
+	pol->sadb_x_policy_reserved = 0;
 	pol->sadb_x_policy_id = 0;
 	pol->sadb_x_policy_priority = 0;
 
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