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Ubuntu 10.04 LTS USN-1688-1 Moderate: Kernel Exploits and Risks

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Calendar Grey January 15, 2013
Scroller Ubuntu
Ubuntu 10.04 LTS gets vital kernel patches tackling vulnerabilities sourced from Oneiric backport.
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:

Jon Howell reported a flaw in the Linux kernel's KVM (Kernel-based virtual

machine) subsystem's handling of the XSAVE feature. On hosts, using qemu

userspace, without the XSAVE feature an unprivileged local attacker could

exploit this flaw to crash the system. (CVE-2012-4461)

A flaw was discovered in the Linux kernel's handling of script execution

when module loading is enabled. A local attacker could exploit this flaw to

cause a leak of kernel stack contents. (CVE-2012-4530)

Topics%20covered

Topics Covered

security advisory moderate kernel attack ubuntu exploits linux-backport

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-3.0.0-30-generic    3.0.0-30.47~lucid1
  linux-image-3.0.0-30-generic-pae  3.0.0-30.47~lucid1
  linux-image-3.0.0-30-server     3.0.0-30.47~lucid1
  linux-image-3.0.0-30-virtual    3.0.0-30.47~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

CVE-2012-4461, CVE-2012-4530

Severity
important
Lowest
Low
Medium
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Critical

January 15, 2013

Topics%20covered

Topics Covered

security advisory moderate kernel attack ubuntu exploits linux-backport

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-30.47~lucid1

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