1. Ubuntu Security Notices
  2. USN-1538-1

USN-1538-1: Linux kernel (Natty backport) vulnerabilities

Publication date

14 August 2012

Overview

Several security issues were fixed in the kernel.

Releases

Packages

Details

An error was discovered in the Linux kernel’s network TUN/TAP device
implementation. A local user with access to the TUN/TAP interface (which is
not available to unprivileged users until granted by a root user) could
exploit this flaw to crash the system or potential gain administrative
privileges. (CVE-2012-2136)

A flaw was found in the Linux kernel’s Reliable Datagram Sockets (RDS)
protocol implementation. A local, unprivileged user could use this flaw to
cause a denial of service. (CVE-2012-2372)

An error was discovered in the Linux kernel’s memory subsystem (hugetlb).
An unprivileged local user could exploit this flaw to cause a denial of
service (crash the system). (CVE-2012-2390)

An error was discovered in the Linux kernel’s network TUN/TAP device
implementation. A local user with access to the TUN/TAP interface (which is
not available to unprivileged users until granted by a root user) could
exploit this flaw to crash the system or potential gain administrative
privileges. (CVE-2012-2136)

A flaw was found in the Linux kernel’s Reliable Datagram Sockets (RDS)
protocol implementation. A local, unprivileged user could use this flaw to
cause a denial of service. (CVE-2012-2372)

An error was discovered in the Linux kernel’s memory subsystem (hugetlb).
An unprivileged local user could exploit this flaw to cause a denial of
service (crash the system). (CVE-2012-2390)

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
10.04 lucid linux-image-2.6.38-15-generic –  2.6.38-15.65~lucid1
linux-image-2.6.38-15-virtual –  2.6.38-15.65~lucid1
linux-image-2.6.38-15-generic-pae –  2.6.38-15.65~lucid1
linux-image-2.6.38-15-server –  2.6.38-15.65~lucid1

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References

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