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Ubuntu 10.04 LTS USN-1340-1 Critical: Linux Kernel Flaws and Fixes

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Calendar Grey January 23, 2012
Scroller Ubuntu
Resolved vulnerabilities in linux-lts-backport-oneiric kernel impacting Ubuntu 10.04 LTS users. Upgrade advised.
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:

Clement Lecigne discovered a bug in the HFS filesystem. A local attacker

could exploit this to cause a kernel oops. (CVE-2011-2203)

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)

A flaw was found in how the Linux kernel handles user-defined key types. An

unprivileged local user could exploit this to crash the system.

(CVE-2011-4110)

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)

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

When a malformed HFS file system is mounted a local user cou...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical software update Ubuntu kernel filesystem Denial of Service

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-3.0.0-15-generic    3.0.0-15.25~lucid1
  linux-image-3.0.0-15-generic-pae  3.0.0-15.25~lucid1
  linux-image-3.0.0-15-server     3.0.0-15.25~lucid1
  linux-image-3.0.0-15-virtual    3.0.0-15.25~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-2011-2203, CVE-2011-4077, CVE-2011-4110, CVE-2011-4132,

CVE-2011-4330, CVE-2012-0044

Severity
critical
Lowest
Low
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Critical

January 23, 2012

Topics%20covered

Topics Covered

security advisory critical software update Ubuntu kernel filesystem Denial of Service

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-15.25~lucid1

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