Ubuntu 12.10 : linux vulnerabilities (USN-1699-1)

Ubuntu Security Notice (C) 2013 Canonical, Inc. / NASL script (C) 2013 Tenable Network Security, Inc.

Synopsis :

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

Description :

Jon Howell reported a flaw in the Linux kernel's KVM (Kernel-based
virtual machine) subsystem's handling of the XSAVE CPU feature. On
hosts without the XSAVE CPU feature, using qemu userspace, an
unprivileged local attacker could exploit this flaw to crash the
system. (CVE-2012-4461)

A flaw was discovered in the Linux kernel's handling of script
execution when module loading is enabled. A local attacker could
exploit this flaw to cause a leak of kernel stack contents.

Florian Weimer discovered that hypervkvpd, which is distributed in the
Linux kernel, was not correctly validating source addresses of netlink
packets. An untrusted local user can cause a denial of service by
causing hypervkvpd to exit. (CVE-2012-5532).

Solution :

Update the affected linux-image-3.5.0-22-generic and / or
linux-image-3.5.0-22-highbank packages.

Risk factor :

Medium / CVSS Base Score : 4.9
CVSS Temporal Score : 4.3
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 63615 ()

Bugtraq ID: 56414

CVE ID: CVE-2012-4461