Articles / Ubuntu: New Linux kernel pa…

Ubuntu: New Linux kernel packages fix security vulnerabilities

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-1487-1
June 29, 2012

linux vulnerability
==========================================================================

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

- Ubuntu 11.10

Summary:

The system could be made to crash if it received specially crafted network
traffic.

Software Description:
- linux: Linux kernel

Details:

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).

Update instructions:

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

Ubuntu 11.10:
 linux-image-3.0.0-22-generic    3.0.0-22.36
 linux-image-3.0.0-22-generic-pae  3.0.0-22.36
 linux-image-3.0.0-22-omap       3.0.0-22.36
 linux-image-3.0.0-22-powerpc    3.0.0-22.36
 linux-image-3.0.0-22-powerpc-smp  3.0.0-22.36
 linux-image-3.0.0-22-powerpc64-smp  3.0.0-22.36
 linux-image-3.0.0-22-server     3.0.0-22.36
 linux-image-3.0.0-22-virtual    3.0.0-22.36

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

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References:
 http://www.ubuntu.com/usn/usn-1487-1
 CVE-2012-2375

Package Information:
 https://launchpad.net/ubuntu/+source/linux/3.0.0-22.36
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