USN-2719-1: Linux kernel vulnerability

Published Aug 18, 2015
·
Updated

Marcelo Ricardo Leitner discovered a race condition in the Linux kernel's SCTP address configuration lists when using Address Configuration Change (ASCONF) options on a socket. An unprivileged local user could exploit this flaw to cause a denial of service (system crash).

Affected Software

14 affected componentsFixes available
All of the following
ubuntu/linux-image-3.19.0-26-generic-lpae<3.19.0-26.28
3.19.0-26.28
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-26-lowlatency<3.19.0-26.28
3.19.0-26.28
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-26-generic<3.19.0-26.28
3.19.0-26.28
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-26-powerpc64-emb<3.19.0-26.28
3.19.0-26.28
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-26-powerpc-smp<3.19.0-26.28
3.19.0-26.28
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-26-powerpc64-smp<3.19.0-26.28
3.19.0-26.28
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-26-powerpc-e500mc<3.19.0-26.28
3.19.0-26.28
Ubuntu Ubuntu=15.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-26-generic-lpae to a version that resolves this vulnerability.

    Fixed in 3.19.0-26.28
  2. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-26-lowlatency to a version that resolves this vulnerability.

    Fixed in 3.19.0-26.28
  3. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-26-generic to a version that resolves this vulnerability.

    Fixed in 3.19.0-26.28
  4. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-26-powerpc64-emb to a version that resolves this vulnerability.

    Fixed in 3.19.0-26.28
  5. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-26-powerpc-smp to a version that resolves this vulnerability.

    Fixed in 3.19.0-26.28
  6. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-26-powerpc64-smp to a version that resolves this vulnerability.

    Fixed in 3.19.0-26.28
  7. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-26-powerpc-e500mc to a version that resolves this vulnerability.

    Fixed in 3.19.0-26.28

Event History

Aug 18, 2015
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of USN-2719-1?

The severity of USN-2719-1 is classified as a denial of service vulnerability.

2

How do I fix USN-2719-1?

To fix USN-2719-1, update the kernel to version 3.19.0-26.28 or later.

3

Who is affected by USN-2719-1?

USN-2719-1 affects unprivileged local users of Ubuntu 15.04 or older using the affected Linux kernel versions.

4

What type of vulnerability is USN-2719-1?

USN-2719-1 is a race condition vulnerability in the Linux kernel's SCTP address configuration.

5

Can USN-2719-1 be exploited remotely?

No, USN-2719-1 requires local access to the system for exploitation.

Company

Resources

Contact

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