USN-2266-1: Linux kernel vulnerability

Published Jul 5, 2014
·
Updated

Andy Lutomirski discovered a flaw with the Linux kernel's ptrace syscall on x8664 processors. An attacker could exploit this flaw to cause a denial of service (System Crash) or potential gain administrative privileges.

Affected Software

28 affected componentsFixes available
All of the following
ubuntu/linux-image-2.6.32-62-powerpc-smp<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-versatile<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-server<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-powerpc64-smp<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-lpia<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-386<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-generic-pae<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-sparc64-smp<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-preempt<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-sparc64<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-virtual<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-ia64<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-generic<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-62-powerpc<2.6.32-62.126
2.6.32-62.126
Ubuntu Ubuntu=10.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-powerpc-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  2. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-versatile to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  3. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-server to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  4. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-powerpc64-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  5. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-lpia to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  6. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-386 to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  7. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-generic-pae to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  8. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-sparc64-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  9. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-preempt to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  10. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-sparc64 to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  11. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-virtual to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  12. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-ia64 to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  13. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-generic to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126
  14. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-62-powerpc to a version that resolves this vulnerability.

    Fixed in 2.6.32-62.126

Event History

Jul 5, 2014
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of USN-2266-1?

The severity of USN-2266-1 is critical as it allows potential denial of service or unauthorized administrative privileges.

2

How do I fix USN-2266-1?

To fix USN-2266-1, update the Linux kernel to the version 2.6.32-62.126 or higher.

3

Which systems are affected by USN-2266-1?

USN-2266-1 affects Ubuntu 10.04 systems running specific packages of the Linux kernel.

4

What kind of attack does USN-2266-1 enable?

USN-2266-1 enables denial of service attacks or potential privilege escalation by exploiting a flaw in the ptrace syscall.

5

Is there a workaround for USN-2266-1 until I can update?

Currently, there is no documented workaround for USN-2266-1; immediate updating is recommended.

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