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Ubuntu 10.04 LTS USN-1471-1 Critical: Kernel Denial Of Service Risks

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Calendar Grey June 12, 2012
Scroller Ubuntu
Serious flaws in the kernel of Ubuntu 10.04 LTS could result in risk for denial of service and unauthorized elevation of privileges.
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:

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 ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service remote exploit Ubuntu local exploit kernel

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-3.0.0-21-generic    3.0.0-21.35~lucid1
  linux-image-3.0.0-21-generic-pae  3.0.0-21.35~lucid1
  linux-image-3.0.0-21-server     3.0.0-21.35~lucid1
  linux-image-3.0.0-21-virtual    3.0.0-21.35~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

https://ubuntu.com/security/notices/USN-1471-1

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 12, 2012

Topics%20covered

Topics Covered

security advisory denial of service remote exploit Ubuntu local exploit kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-21.35~lucid1

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