linux vulnerabilities

29 June 2012

linux vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 11.04

Summary

Several security issues were fixed in the kernel.

Software Description

• linux - Linux kernel

Details

Stephan Mueller reported a flaw in the Linux kernel’s dl2k network driver’s handling of ioctls. An unprivileged local user could leverage this flaw to cause a denial of service. (CVE-2012-2313)

Timo Warns reported multiple flaws in the Linux kernel’s hfsplus filesystem. An unprivileged local user could exploit these flaws to gain root system priviliges. (CVE-2012-2319)

A flaw was discovered in the Linux kernel’s NFSv4 (Network file system) handling of ACLs (access control lists). A remote NFS server (attacker) could cause a denial of service (OOPS). (CVE-2012-2375)

Update instructions

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

Ubuntu 11.04

linux-image-2.6.38-15-generic - 2.6.38-15.61

linux-image-2.6.38-15-generic-pae - 2.6.38-15.61

linux-image-2.6.38-15-omap - 2.6.38-15.61

linux-image-2.6.38-15-powerpc - 2.6.38-15.61

linux-image-2.6.38-15-powerpc-smp - 2.6.38-15.61

linux-image-2.6.38-15-powerpc64-smp - 2.6.38-15.61

linux-image-2.6.38-15-server - 2.6.38-15.61

linux-image-2.6.38-15-versatile - 2.6.38-15.61

linux-image-2.6.38-15-virtual - 2.6.38-15.61

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2012-2313
• CVE-2012-2319
• CVE-2012-2375