[USN-1647-1] Linux kernel (OMAP4) vulnerabilities

John Johansen john.johansen at canonical.com
Fri Nov 30 09:07:09 UTC 2012


==========================================================================
Ubuntu Security Notice USN-1647-1
November 30, 2012

linux-ti-omap4 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.10

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-ti-omap4: Linux kernel for OMAP4

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)

Update instructions:

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

Ubuntu 12.10:
  linux-image-3.5.0-215-omap4     3.5.0-215.22

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

References:
  http://www.ubuntu.com/usn/usn-1647-1
  CVE-2012-0957, CVE-2012-4565

Package Information:
  https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.5.0-215.22

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