Scientific Linux Security Update : kernel on SL6.x i386/x86_64

This script is Copyright (C) 2012 Tenable Network Security, Inc.


Synopsis :

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

Description :

This update fixes the following security issues :

- A flaw was found in the way the Linux kernel's
journal_unmap_buffer() function handled buffer head
states. On systems that have an ext4 file system with a
journal mounted, a local, unprivileged user could use
this flaw to cause a denial of service. (CVE-2011-4086,
Moderate)

- A flaw was found in the way the KVM_CREATE_IRQCHIP ioctl
was handled. Calling this ioctl when at least one
virtual CPU (VCPU) already existed could lead to a NULL
pointer dereference later when the VCPU is scheduled to
run. A local, unprivileged user on a KVM host could use
this flaw to crash the host. (CVE-2012-1601, Moderate)

The system must be rebooted for this update to take effect.

See also :

http://www.nessus.org/u?27e26034

Solution :

Update the affected packages.

Risk factor :

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

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 61313 ()

Bugtraq ID:

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