Ubuntu 12.04 LTS : linux vulnerabilities (USN-2463-1)

Ubuntu Security Notice (C) 2015-2016 Canonical, Inc. / NASL script (C) 2015-2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related
patches.

Description :

A race condition with MMIO and PIO transactions in the KVM (Kernel
Virtual Machine) subsystem of the Linux kernel was discovered. A guest
OS user could exploit this flaw to cause a denial of service (guest OS
crash) via a specially crafted application. (CVE-2014-7842)

The KVM (kernel virtual machine) subsystem of the Linux kernel
miscalculates the number of memory pages during the handling of a
mapping failure. A guest OS user could exploit this to cause a denial
of service (host OS page unpinning) or possibly have unspecified other
impact by leveraging guest OS privileges. (CVE-2014-8369).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

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)
CVSS Temporal Score : 3.6
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 80511 ()

Bugtraq ID: 70749
71078

CVE ID: CVE-2014-7842
CVE-2014-8369

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