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Ubuntu 12.10 USN-1774-1 Critical: OMAP4 Kernel Denial Of Service

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Calendar Grey March 21, 2013
Scroller Ubuntu
Recent kernel revisions in Ubuntu 12.10 mitigate various vulnerabilities, notably targeting denial of service issues affecting the OMAP4 platform.
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:

Andrew Cooper of Citrix reported a Xen stack corruption in the Linux

kernel. An unprivileged user in a 32bit PVOPS guest can cause the guest

kernel to crash, or operate erroneously. (CVE-2013-0190)

A failure to validate input was discovered in the Linux kernel's Xen

netback (network backend) driver. A user in a guest OS may exploit this

flaw to cause a denial of service to the guest OS and other guest domains.

(CVE-2013-0216)

A memory leak was discovered in the Linux kernel's Xen netback (network

backend) driver. A user in a guest OS could trigger this flaw to cause a

denial of service on the system. (CVE-2013-0217)

A flaw was discovered in the Linux kernel Xen PCI backend driver. If a PCI

device is assigned to the guest OS, the guest OS could exploit this flaw to

cause a denial of service on the host. (CVE-2013-0231)

Tommi Rantal...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical issue Ubuntu kernel Denial of Service OMAP4

Update Instructions

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

Ubuntu 12.10:
  linux-image-3.5.0-221-omap4     3.5.0-221.31

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-1774-1

CVE-2013-0190, CVE-2013-0216, CVE-2013-0217, CVE-2013-0231,

CVE-2013-0290, CVE-2013-0311

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March 21, 2013

Topics%20covered

Topics Covered

security advisory critical issue Ubuntu kernel Denial of Service OMAP4

Package Information

https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.5.0-221.31

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