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-Url: https://git.stricted.de/?a=commitdiff_plain;h=a5b2c5b2ad5853591a6cac6134cd0f599a720865;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

AppArmor: fix oops in apparmor_setprocattr

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>
Cc: stable@kernel.org
Signed-off-by: James Morris <jmorris@namei.org>
---

diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index ae3a698415e..ec1bcecf2cd 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -593,7 +593,8 @@ 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) {