From: Kees Cook <kees.cook@canonical.com>
Date: Tue, 31 May 2011 18:31:41 +0000 (-0700)
Subject: AppArmor: fix oops in apparmor_setprocattr
X-Git-Tag: v2.6.38.8~1
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=035165d752508146f79fe90631fe6b95022d8833;p=karo-tx-linux.git

AppArmor: fix oops in apparmor_setprocattr

commit a5b2c5b2ad5853591a6cac6134cd0f599a720865 upstream.

When invalid parameters are passed to apparmor_setprocattr a NULL deref
oops occurs when it tries to record an audit message. This is because
it is passing NULL for the profile parameter for aa_audit. But aa_audit
now requires that the profile passed is not NULL.

Fix this by passing the current profile on the task that is trying to
setprocattr.

Signed-off-by: Kees Cook <kees@ubuntu.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index b7106f192b75..e2e902f39ac2 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -592,7 +592,8 @@ static int apparmor_setprocattr(struct task_struct *task, char *name,
 			sa.aad.op = OP_SETPROCATTR;
 			sa.aad.info = name;
 			sa.aad.error = -EINVAL;
-			return aa_audit(AUDIT_APPARMOR_DENIED, NULL, GFP_KERNEL,
+			return aa_audit(AUDIT_APPARMOR_DENIED,
+					__aa_current_profile(), GFP_KERNEL,
 					&sa, NULL);
 		}
 	} else if (strcmp(name, "exec") == 0) {