Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2012-2013)

This script is Copyright (C) 2013 Tenable Network Security, Inc.


Synopsis :

The remote Oracle Linux host is missing one or more security updates.

Description :

Description of changes:

* CVE-2011-4086: Denial of service in journaling block device.

The journal block device assumed that a buffer marked as unwritten
or delay could be live without checking if the buffer was mapped.

An unprivileged local user could use this flaw to crash the system.


* CVE-2012-1601: Denial of service in KVM VCPU creation.

Inconsistent state in the creation of KVM virtual CPU's could
lead to NULL pointer dereferences. A unprivileged local user
could use this flaw to crash the system.


[2.6.39-100.7.1.el6uek]
- KVM: Ensure all vcpus are consistent with in-kernel irqchip settings (Avi
Kivity) [Bugdb: 13871] {CVE-2012-1601}
- jbd2: clear BH_Delay BH_Unwritten in journal_unmap_buffer (Eric Sandeen)
[Bugdb: 13871] {CVE-2011-4086}

See also :

https://oss.oracle.com/pipermail/el-errata/2012-May/002820.html
https://oss.oracle.com/pipermail/el-errata/2012-May/002821.html

Solution :

Update the affected unbreakable enterprise kernel packages.

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C)

Family: Oracle Linux Local Security Checks

Nessus Plugin ID: 68673 ()

Bugtraq ID:

CVE ID: CVE-2011-4086
CVE-2012-1601