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 1 491
Alerts This Week
Warning Icon 1 491

Ubuntu 10.04 LTS USN-1652-1 Moderate: Kernel Backport Threat

ubuntu
Calendar Grey November 30, 2012
Scroller Ubuntu
Multiple vulnerabilities fixed in the Oneiric backport kernel of Ubuntu. Keep your software up to date to maintain security standards.
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:

Brad Spengler discovered a flaw in the Linux kernel's uname system call. An

unprivileged user could exploit this flaw to read kernel stack memory.

(CVE-2012-0957)

Rodrigo Freire discovered a flaw in the Linux kernel's TCP illinois

congestion control algorithm. A local attacker could use this to cause a

denial of service. (CVE-2012-4565)

Topics%20covered

Topics Covered

security advisory denial of service system update ubuntu linux kernel backport

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-3.0.0-28-generic    3.0.0-28.45~lucid1
  linux-image-3.0.0-28-generic-pae  3.0.0-28.45~lucid1
  linux-image-3.0.0-28-server     3.0.0-28.45~lucid1
  linux-image-3.0.0-28-virtual    3.0.0-28.45~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

https://ubuntu.com/security/notices/USN-1652-1

CVE-2012-0957, CVE-2012-4565

Severity
important
Lowest
Low
Medium
High
Critical

November 30, 2012

Topics%20covered

Topics Covered

security advisory denial of service system update ubuntu linux kernel backport

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-28.45~lucid1

Get the latest News and Insights

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