USN-1488-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-1488-1

29th 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 version:

Ubuntu 11.04:
linux-image-2.6.38-15-powerpc 2.6.38-15.61
linux-image-2.6.38-15-omap 2.6.38-15.61
linux-image-2.6.38-15-generic-pae 2.6.38-15.61
linux-image-2.6.38-15-server 2.6.38-15.61
linux-image-2.6.38-15-powerpc64-smp 2.6.38-15.61
linux-image-2.6.38-15-virtual 2.6.38-15.61
linux-image-2.6.38-15-versatile 2.6.38-15.61
linux-image-2.6.38-15-generic 2.6.38-15.61
linux-image-2.6.38-15-powerpc-smp 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