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Alerts This Week
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Ubuntu 10.10: USN-1293-1 Critical: Kernel Denial of Service Issues

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Calendar Grey December 8, 2011
Scroller Ubuntu
=========================================================================Ubuntu Security Notice USN-
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

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.

When a malformed HFS file system is mounted a l...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu kernel system update local exploitation

Update Instructions

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

Ubuntu 10.10:
  linux-image-2.6.35-31-generic   2.6.35-31.63
  linux-image-2.6.35-31-generic-pae  2.6.35-31.63
  linux-image-2.6.35-31-omap      2.6.35-31.63
  linux-image-2.6.35-31-powerpc   2.6.35-31.63
  linux-image-2.6.35-31-powerpc-smp  2.6.35-31.63
  linux-image-2.6.35-31-powerpc64-smp  2.6.35-31.63
  linux-image-2.6.35-31-server    2.6.35-31.63
  linux-image-2.6.35-31-versatile  2.6.35-31.63
  linux-image-2.6.35-31-virtual   2.6.35-31.63

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

References

https://ubuntu.com/security/notices/USN-1293-1

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

CVE-2011-4330

Severity
critical
Lowest
Low
Medium
High
Critical

December 08, 2011

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu kernel system update local exploitation

Package Information

https://launchpad.net/ubuntu/+source/linux/2.6.35-31.63

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