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Ubuntu 11.10: USN-1476-1 Critical: Kernel OMAP4 Denial of Service

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Calendar Grey June 15, 2012
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The recent security notice regarding kernel vulnerabilities addressed in USN-1476-1 provides essential information on potential threats and their resolutions.
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:

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation.

A remote NFS server (attacker) could exploit this flaw to cause a denial of

service. (CVE-2011-4131)

A flaw was discovered in the Linux kernel's KVM (kernel virtual machine).

An administrative user in the guest OS could leverage this flaw to cause a

denial of service in the host OS. (CVE-2012-2121)

Schacher Raindel discovered a flaw in the Linux kernel's memory handling

when hugetlb is enabled. An unprivileged local attacker could exploit this

flaw to cause a denial of service and potentially gain higher privileges.

(CVE-2012-2133)

Stephan Mueller reported a flaw in the Linux kernel's dl2k network driver's

handling of ioctls. An unprivileged local user could leverage this flaw to

cause a denial of service. (CVE-2012-2313)

Timo Warns reported multiple flaws ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical 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-3.0.0-1211-omap4    3.0.0-1211.23

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-1476-1

CVE-2011-4131, CVE-2012-2121, CVE-2012-2133, CVE-2012-2313,

CVE-2012-2319, CVE-2012-2383, CVE-2012-2384

Severity
critical
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Critical

June 15, 2012

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu linux-ti-omap4

Package Information

https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.0.0-1211.23

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