Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 521
Alerts This Week
Warning Icon 1 521

Ubuntu 10.04 LTS USN-1299-1 Critical: Kernel Threats Resolved

ubuntu
Calendar Grey December 13, 2011
Scroller Ubuntu
Ubuntu 20.04 LTS addresses several security flaws enhancing system reliability and thwarting potential unauthorized intrusion attempts.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-ec2: Linux kernel for EC2

Details:

Peter Huewe discovered an information leak in the handling of reading

security-related TPM data. A local, unprivileged user could read the

results of a previous TPM command. (CVE-2011-1162)

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() fun...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service information leak kernel root access crash issue ubuntu 10.04

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-2.6.32-341-ec2      2.6.32-341.42

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-2011-1162, CVE-2011-4077, CVE-2011-4081, CVE-2011-4132,

CVE-2011-4326, CVE-2011-4330

Severity
critical
Lowest
Low
Medium
High
Critical

December 13, 2011

Topics%20covered

Topics Covered

security advisory denial of service information leak kernel root access crash issue ubuntu 10.04

Package Information

https://launchpad.net/ubuntu/+source/linux-ec2/2.6.32-341.42

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.