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 1 461
Alerts This Week
Warning Icon 1 461

Ubuntu 12.04 LTS USN-1941-1 Moderate: Kernel Issues Addressed

ubuntu
Calendar Grey September 6, 2013
Scroller Ubuntu
Multiple vulnerabilities were addressed in the Linux kernel impacting Ubuntu 12.04 LTS users. It's crucial to update your system for enhanced security.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

Chanam Park reported a Null pointer flaw in the Linux kernel's Ceph client.

A remote attacker could exploit this flaw to cause a denial of service

(system crash). (CVE-2013-1059)

Vasily Kulikov discovered a flaw in the Linux Kernel's perf tool that

allows for privilege escalation. A local user could exploit this flaw to

run commands as root when using the perf tool. (CVE-2013-1060)

Jonathan Salwan discovered an information leak in the Linux kernel's cdrom

driver. A local user can exploit this leak to obtain sensitive information

from kernel memory if the CD-ROM drive is malfunctioning. (CVE-2013-2164)

A flaw was discovered in the Linux kernel when an IPv6 socket is used to

connect to an IPv4 destination. An unprivileged local user could exploit

this flaw to cause a denial of service (system crash). (CVE-2013-2232)

An information leak was discovered i...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel update privilege escalation ubuntu linux security

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-53-generic    3.2.0-53.81
  linux-image-3.2.0-53-generic-pae  3.2.0-53.81
  linux-image-3.2.0-53-highbank   3.2.0-53.81
  linux-image-3.2.0-53-omap       3.2.0-53.81
  linux-image-3.2.0-53-powerpc-smp  3.2.0-53.81
  linux-image-3.2.0-53-powerpc64-smp  3.2.0-53.81
  linux-image-3.2.0-53-virtual    3.2.0-53.81

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-1941-1

CVE-2013-1059, CVE-2013-1060, CVE-2013-2164, CVE-2013-2232,

CVE-2013-2234, CVE-2013-2851, CVE-2013-4162, CVE-2013-4163

September 06, 2013

Topics%20covered

Topics Covered

security advisory denial of service kernel update privilege escalation ubuntu linux security

Package Information

https://launchpad.net/ubuntu/+source/linux/3.2.0-53.81

Get the latest News and Insights

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