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Ubuntu 10.04 LTS: USN-1384-2 Urgent Kernel Vulnerability Resolutions

ubuntu
Calendar Grey March 6, 2012
Scroller Ubuntu
Ubuntu's recent kernel patch addresses significant security flaws, ensuring protection against potential attacks and system failures.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-backport-oneiric: Linux kernel backport from Oneiric

Details:

A bug was discovered in the Linux kernel's calculation of OOM (Out of

memory) scores, that would result in the wrong process being killed. A user

could use this to kill the process with the highest OOM score, even if that

process belongs to another user or the system. (CVE-2011-4097)

Paolo Bonzini discovered a flaw in Linux's handling of the SG_IO ioctl

command. A local user, or user in a VM could exploit this flaw to bypass

restrictions and gain read/write access to all data on the affected block

device. (CVE-2011-4127)

A flaw was found in KVM's Programmable Interval Timer (PIT). When a virtual

interrupt control is not available a local user could use this to cause a

denial of service by starting a timer. (CVE-2011-4622)

A flaw was discovered in the XFS filesystem. If a local user mounts a

specially crafted X...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical kernel system crash linux-lts-backport-oneiric

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-3.0.0-16-generic    3.0.0-16.29~lucid1
  linux-image-3.0.0-16-generic-pae  3.0.0-16.29~lucid1
  linux-image-3.0.0-16-server     3.0.0-16.29~lucid1
  linux-image-3.0.0-16-virtual    3.0.0-16.29~lucid1

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

https://ubuntu.com/security/notices/USN-1384-1

CVE-2011-4097, CVE-2011-4127, CVE-2011-4622, CVE-2012-0038,

CVE-2012-0055, CVE-2012-0207

Severity
critical
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March 06, 2012

Topics%20covered

Topics Covered

security advisory critical kernel system crash linux-lts-backport-oneiric

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-16.29~lucid1

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