Articles / Ubuntu: New Linux kernel pa…

Ubuntu: New Linux kernel packages fix security vulnerabilities

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. 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. 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).

Updated packages are available from security.ubuntu.com.

==========================================================================
Ubuntu Security Notice USN-1488-1
June 29, 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

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
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