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Ubuntu 10.04 LTS USN-1292-1 Critical: Kernel Fixes For Threats

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Calendar Grey December 8, 2011
Scroller Ubuntu
Updates addressing various kernel vulnerabilities in Ubuntu 10.04 LTS help enhance overall system security.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-backport-maverick: Linux kernel backport from Maverick

Details:

A bug was discovered in the XFS filesystem's handling of pathnames. A local

attacker could exploit this to crash the system, leading to a denial of

service, or gain root privileges. (CVE-2011-4077)

Nick Bowler discovered the kernel GHASH message digest algorithm

incorrectly handled error conditions. A local attacker could exploit this

to cause a kernel oops. (CVE-2011-4081)

A flaw was found in the Journaling Block Device (JBD). A local attacker

able to mount ext3 or ext4 file systems could exploit this to crash the

system, leading to a denial of service. (CVE-2011-4132)

A bug was found in the way headroom check was performed in

udp6_ufo_fragment() function. A remote attacker could use this flaw to

crash the system. (CVE-2011-4326)

Clement Lecigne discovered a bug in the HFS file system bounds checking.

Wh...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical privilege escalation ubuntu kernel issues

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-2.6.35-31-generic   2.6.35-31.63~lucid1
  linux-image-2.6.35-31-generic-pae  2.6.35-31.63~lucid1
  linux-image-2.6.35-31-server    2.6.35-31.63~lucid1
  linux-image-2.6.35-31-virtual   2.6.35-31.63~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

CVE-2011-4077, CVE-2011-4081, CVE-2011-4132, CVE-2011-4326,

CVE-2011-4330

Severity
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December 08, 2011

Topics%20covered

Topics Covered

security advisory denial of service critical privilege escalation ubuntu kernel issues

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-backport-maverick/2.6.35-31.63~lucid1

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