7.2 - USN-1488-1

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

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

References:
http://www.ubuntu.com/usn/usn-1488-1
CVE-2012-2313, CVE-2012-2319, CVE-2012-2375

Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.38-15.61