| Description: | Description:
The remote host is missing an update to linux-image-2.6.38-13-generic
announced via advisory USN-1285-1.
Details:
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)
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)
Solution:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 11.04:
linux-image-2.6.38-13-generic 2.6.38-13.52
linux-image-2.6.38-13-generic-pae 2.6.38-13.52
linux-image-2.6.38-13-omap 2.6.38-13.52
linux-image-2.6.38-13-powerpc 2.6.38-13.52
linux-image-2.6.38-13-powerpc-smp 2.6.38-13.52
linux-image-2.6.38-13-powerpc64-smp 2.6.38-13.52
linux-image-2.6.38-13-server 2.6.38-13.52
linux-image-2.6.38-13-versatile 2.6.38-13.52
linux-image-2.6.38-13-virtual 2.6.38-13.52
http://www.securityspace.com/smysecure/catid.html?in=USN-1285-1
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