From: Casey Schaufler <casey@schaufler-ca.com>
To: jmorris@namei.org, linux-security-module@vger.kernel.org,
selinux@vger.kernel.org
Cc: keescook@chromium.org, john.johansen@canonical.com,
penguin-kernel@i-love.sakura.ne.jp, paul@paul-moore.com
Subject: [PATCH 95/97] LSM: Avoid network conflicts in SELinux and Smack
Date: Thu, 28 Feb 2019 14:43:54 -0800 [thread overview]
Message-ID: <20190228224356.2608-26-casey@schaufler-ca.com> (raw)
In-Reply-To: <20190228224356.2608-1-casey@schaufler-ca.com>
Add calls to security_reconcile_netlbl() in SELinux and
Smack to ensure that only packets that are acceptable to
all active security modules get sent.
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
---
security/selinux/hooks.c | 3 +++
security/smack/smack_netfilter.c | 2 ++
2 files changed, 5 insertions(+)
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 84bfcf7ca08b..4a8996b7b477 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -5400,6 +5400,9 @@ static unsigned int selinux_ip_output(struct sk_buff *skb,
sid = SECINITSID_KERNEL;
if (selinux_netlbl_skbuff_setsid(skb, family, sid) != 0)
return NF_DROP;
+ /* verify that this IP option works with other security modules */
+ if (sk && security_reconcile_netlbl(sk))
+ return NF_DROP;
return NF_ACCEPT;
}
diff --git a/security/smack/smack_netfilter.c b/security/smack/smack_netfilter.c
index 7d202dde75b6..55cc38ae07f5 100644
--- a/security/smack/smack_netfilter.c
+++ b/security/smack/smack_netfilter.c
@@ -89,6 +89,8 @@ static unsigned int smack_ipv4_output(void *priv,
return NF_DROP;
ssp->smk_set = rc;
}
+ if (security_reconcile_netlbl(sk))
+ return NF_DROP;
return NF_ACCEPT;
}
--
2.17.0
next prev parent reply other threads:[~2019-02-28 22:44 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-28 22:43 [PATCH 00/97] LSM: Complete module stacking Casey Schaufler
2019-02-28 22:43 ` [PATCH 71/97] LSM: Add secmark refcounting to call_one list Casey Schaufler
2019-02-28 22:43 ` [PATCH 72/97] LSM: Add secmark refcounting to call_one list - part 2 Casey Schaufler
2019-02-28 22:43 ` [PATCH 73/97] LSM: refactor security_setprocattr Casey Schaufler
2019-02-28 22:43 ` [PATCH 74/97] Smack: Detect if secmarks can be safely used Casey Schaufler
2019-02-28 22:43 ` [PATCH 75/97] LSM: Support multiple LSMs using inode_init_security Casey Schaufler
2019-02-28 22:43 ` [PATCH 76/97] LSM: Use full security context in security_inode_setsecctx Casey Schaufler
2019-02-28 22:43 ` [PATCH 77/97] LSM: Correct handling of ENOSYS in inode_setxattr Casey Schaufler
2019-02-28 22:43 ` [PATCH 78/97] LSM: Infrastructure security blobs for mount options Casey Schaufler
2019-02-28 22:43 ` [PATCH 79/97] LSM: Fix for security_init_inode_security Casey Schaufler
2019-02-28 22:43 ` [PATCH 80/97] Smack: Advertise the secid to netlabel Casey Schaufler
2019-02-28 22:43 ` [PATCH 81/97] LSM: Change error detection for UDP peer security Casey Schaufler
2019-02-28 22:43 ` [PATCH 82/97] Smack: Fix setting of the CIPSO MLS_CAT flags Casey Schaufler
2019-02-28 22:43 ` [PATCH 83/97] Smack: Set netlabel flags properly on new label import Casey Schaufler
2019-02-28 22:43 ` [PATCH 84/97] Netlabel: Add a secattr comparison API function Casey Schaufler
2019-02-28 22:43 ` [PATCH 85/97] Smack: Let netlabel do the work on the ambient domain Casey Schaufler
2019-02-28 22:43 ` [PATCH 86/97] Smack: Don't set the socket label on each send Casey Schaufler
2019-02-28 22:43 ` [PATCH 87/97] Smack: Let netlabel do the work on connections Casey Schaufler
2019-02-28 22:43 ` [PATCH 88/97] Netlabel: Return the labeling type on socket Casey Schaufler
2019-02-28 22:43 ` [PATCH 89/97] " Casey Schaufler
2019-02-28 22:43 ` [PATCH 90/97] " Casey Schaufler
2019-02-28 22:43 ` [PATCH 91/97] " Casey Schaufler
2019-02-28 22:43 ` [PATCH 92/97] LSM: Remember the NLTYPE of netlabel sockets Casey Schaufler
2019-02-28 22:43 ` [PATCH 93/97] Smack: Use the NLTYPE on output Casey Schaufler
2019-02-28 22:43 ` [PATCH 94/97] LSM: Hook for netlabel reconciliation Casey Schaufler
2019-02-28 22:43 ` Casey Schaufler [this message]
2019-02-28 22:43 ` [PATCH 96/97] LSM: Apply Netlabel consitancy checks on send and connect Casey Schaufler
2019-02-28 22:43 ` [PATCH 97/97] Smack: Remove the exclusive bit Casey Schaufler
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