USN-2462-1: Linux kernel vulnerabilities

Published Jan 13, 2015
·
Updated

Andy Lutomirski discovered that the Linux kernel does not properly handle faults associated with the Stack Segment (SS) register in the x86 architecture. A local attacker could exploit this flaw to gain administrative privileges. (CVE-2014-9322) Lars Bull reported a race condition in the PIT (programmable interrupt timer) emulation in the KVM (Kernel Virtual Machine) subsystem of the Linux kernel. A local guest user with access to PIT i/o ports could exploit this flaw to cause a denial of service (crash) on the host. (CVE-2014-3611) Lars Bull and Nadav Amit reported a flaw in how KVM (the Kernel Virtual Machine) handles noncanonical writes to certain MSR registers. A privileged guest user can exploit this flaw to cause a denial of service (kernel panic) on the host. (CVE-2014-3610)

Affected Software

28 affected componentsFixes available
All of the following
ubuntu/linux-image-2.6.32-71-powerpc-smp<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-versatile<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-server<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-powerpc64-smp<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-lpia<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-386<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-generic-pae<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-sparc64-smp<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-preempt<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-sparc64<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-ia64<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-virtual<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-generic<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-71-powerpc<2.6.32-71.138
2.6.32-71.138
Ubuntu Ubuntu=10.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-powerpc-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  2. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-versatile to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  3. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-server to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  4. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-powerpc64-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  5. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-lpia to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  6. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-386 to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  7. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-generic-pae to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  8. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-sparc64-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  9. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-preempt to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  10. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-sparc64 to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  11. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-ia64 to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  12. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-virtual to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  13. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-generic to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138
  14. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-71-powerpc to a version that resolves this vulnerability.

    Fixed in 2.6.32-71.138

Event History

Jan 13, 2015
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of USN-2462-1?

The severity of USN-2462-1 is critical as it allows a local attacker to gain administrative privileges through exploitation.

2

How do I fix USN-2462-1?

To fix USN-2462-1, update your Linux kernel to version 2.6.32-71.138 or newer.

3

Which systems are affected by USN-2462-1?

Systems running Ubuntu 10.04 with specific Linux kernel packages such as linux-image-2.6.32-71 are affected by USN-2462-1.

4

What is the potential impact of USN-2462-1?

The potential impact of USN-2462-1 includes unauthorized access and control over the affected system due to administrative privilege escalation.

5

Who discovered the vulnerability in USN-2462-1?

The vulnerability in USN-2462-1 was discovered by Andy Lutomirski.

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