USN-2601-1: Linux kernel vulnerability

Published May 5, 2015
·
Updated

A race condition between chown() and execve() was discovered in the Linux kernel. A local attacker could exploit this race by using chown on a setuid-user-binary to gain administrative privileges.

Affected Software

14 affected componentsFixes available
All of the following
ubuntu/linux-image-3.19.0-16-lowlatency<3.19.0-16.16
3.19.0-16.16
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-16-powerpc64-smp<3.19.0-16.16
3.19.0-16.16
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-16-generic<3.19.0-16.16
3.19.0-16.16
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-16-powerpc-smp<3.19.0-16.16
3.19.0-16.16
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-16-powerpc-e500mc<3.19.0-16.16
3.19.0-16.16
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-16-generic-lpae<3.19.0-16.16
3.19.0-16.16
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-16-powerpc64-emb<3.19.0-16.16
3.19.0-16.16
Ubuntu Ubuntu=15.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-16-lowlatency to a version that resolves this vulnerability.

    Fixed in 3.19.0-16.16
  2. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-16-powerpc64-smp to a version that resolves this vulnerability.

    Fixed in 3.19.0-16.16
  3. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-16-generic to a version that resolves this vulnerability.

    Fixed in 3.19.0-16.16
  4. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-16-powerpc-smp to a version that resolves this vulnerability.

    Fixed in 3.19.0-16.16
  5. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-16-powerpc-e500mc to a version that resolves this vulnerability.

    Fixed in 3.19.0-16.16
  6. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-16-generic-lpae to a version that resolves this vulnerability.

    Fixed in 3.19.0-16.16
  7. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-16-powerpc64-emb to a version that resolves this vulnerability.

    Fixed in 3.19.0-16.16

Event History

May 5, 2015
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of USN-2601-1?

The severity of USN-2601-1 is rated as high due to the potential for a local attacker to gain administrative privileges.

2

How do I fix USN-2601-1?

To fix USN-2601-1, you must upgrade your Linux kernel to the version 3.19.0-16.16 or later.

3

Which Ubuntu versions are affected by USN-2601-1?

USN-2601-1 affects Ubuntu version 15.04.

4

What is the vulnerability related to USN-2601-1?

USN-2601-1 is related to a race condition between chown() and execve() in the Linux kernel.

5

Can USN-2601-1 be exploited remotely?

No, USN-2601-1 cannot be exploited remotely as it requires local access to the system.

Company

Resources

Contact

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