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Alerts This Week
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Alerts This Week
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Ubuntu 11.10: USN-1726-1 Moderate: Kernel Denial Of Service

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Calendar Grey February 15, 2013
Scroller Ubuntu
February 12, 2013: Canonical Security Alert USN-1730-1 concerning kernel issues impacting OMAP4 devices.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-ti-omap4: Linux kernel for OMAP4

Details:

It was discovered that hypervkvpd, which is distributed in the Linux

kernel, was not correctly validating the origin on Netlink messages. An

untrusted local user can cause a denial of service of Linux guests in

Hyper-V virtualization environments. (CVE-2012-2669)

Dmitry Monakhov reported a race condition flaw the Linux ext4 filesystem

that can expose stale data. An unprivileged user could exploit this flaw to

cause an information leak. (CVE-2012-4508)

Florian Weimer discovered that hypervkvpd, which is distributed in the

Linux kernel, was not correctly validating source addresses of netlink

packets. An untrusted local user can cause a denial of service by causing

hypervkvpd to exit. (CVE-2012-5532)

Topics%20covered

Topics Covered

security advisory denial of service information leak kernel ubuntu linux-ti-omap4

Update Instructions

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

Ubuntu 11.10:
  linux-image-3.0.0-1221-omap4    3.0.0-1221.34

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-1726-1

CVE-2012-2669, CVE-2012-4508, CVE-2012-5532

Severity
important
Lowest
Low
Medium
High
Critical

February 14, 2013

Topics%20covered

Topics Covered

security advisory denial of service information leak kernel ubuntu linux-ti-omap4

Package Information

https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.0.0-1221.34

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