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Ubuntu 10.04 LTS: USN-1538-1 Moderate: Kernel Security Threats

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Calendar Grey August 14, 2012
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Security flaws addressed in Ubuntu 10.04 LTS are outlined with possible consequences and advice for users.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-backport-natty: Linux kernel backport from Natty

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)

Topics%20covered

Topics Covered

security advisory denial of service ubuntu system crash kernel issues

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-2.6.38-15-generic   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
  linux-image-2.6.38-15-virtual   2.6.38-15.65~lucid1

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

References

https://ubuntu.com/security/notices/USN-1538-1

CVE-2012-2136, CVE-2012-2372, CVE-2012-2390

Severity
important
Lowest
Low
Medium
High
Critical

August 14, 2012

Topics%20covered

Topics Covered

security advisory denial of service ubuntu system crash kernel issues

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-backport-natty/2.6.38-15.65~lucid1

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