USN-1244-1 : linux-ti-omap4 vulnerabilities

Ubuntu Security Notice (C) 2011 Canonical, Inc. / NASL script (C) 2011 Tenable Network Security, Inc.


Synopsis :

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

Description :

Dan Rosenberg discovered that the Linux kernel X.25 implementation
incorrectly parsed facilities. A remote attacker could exploit this
to crash the kernel, leading to a denial of service. (CVE-2010-3873)

Andrea Righi discovered a race condition in the KSM memory merging
support. If KSM was being used, a local attacker could exploit this
to crash the system, leading to a denial of service. (CVE-2011-2183)

Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly
handled unlock requests. A local attacker could exploit this to cause
a denial of service. (CVE-2011-2491)

Vasiliy Kulikov discovered that taskstats did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2494)

Vasiliy Kulikov discovered that /proc/PID/io did not enforce access
restrictions. A local attacker could exploit this to read certain
information, leading to a loss of privacy. (CVE-2011-2495)

It was discovered that the wireless stack incorrectly verified SSID
lengths. A local attacker could exploit this to cause a denial of
service or gain root privileges. (CVE-2011-2517)

It was discovered that the EXT4 filesystem contained multiple
off-by-one flaws. A local attacker could exploit this to crash the
system, leading to a denial of service. (CVE-2011-2695)

Christian Ohm discovered that the perf command looks for
configuration files in the current directory. If a privileged user
were tricked into running perf in a directory containing a malicious
configuration file, an attacker could run arbitrary commands and
possibly gain privileges. (CVE-2011-2905)

Vasiliy Kulikov discovered that the Comedi driver did not correctly
clear memory. A local attacker could exploit this to read kernel
stack memory, leading to a loss of privacy. (CVE-2011-2909)

Yogesh Sharma discovered that CIFS did not correctly handle UNCs that
had no prefixpaths. A local attacker with access to a CIFS partition
could exploit this to crash the system, leading to a denial of
service. (CVE-2011-3363)

See also :

http://www.ubuntu.com/usn/usn-1244-1/

Solution :

Update the affected package(s).

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)