From: James Morris <james.l.morris@xxxxxxxxxx>
This is a patch against the SELinux namespace work.
Mark the initial SELinux namespace pointer as __ro_after_init, to harden
against malicious overwrite by an attacker.
Signed-off-by: James Morris <james.l.morris@xxxxxxxxxx>
[sds@xxxxxxxxxxxxx: ported to v5.4-rc1]
Signed-off-by: Stephen Smalley <sds@xxxxxxxxxxxxx>
---
security/selinux/hooks.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 7a4ed553cec0..dc0b143ffa55 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -7096,7 +7096,7 @@ void __put_selinux_ns(struct selinux_ns *ns)
schedule_work(&ns->work);
}
-static struct selinux_ns *init_selinux_ns;
+static struct selinux_ns *init_selinux_ns __ro_after_init;
static __init int selinux_init(void)
{
--
2.21.0
