USN-2799-1: Linux kernel vulnerabilities

Published Nov 5, 2015
·
Updated

It was discovered that in certain situations, a directory could be renamed outside of a bind mounted location. An attacker could use this to escape bind mount containment and gain access to sensitive information. (CVE-2015-2925) Moein Ghasemzadeh discovered that the USB WhiteHEAT serial driver contained hardcoded attributes about the USB devices. An attacker could construct a fake WhiteHEAT USB device that, when inserted, causes a denial of service (system crash). (CVE-2015-5257)

Affected Software

14 affected componentsFixes available
All of the following
ubuntu/linux-image-3.19.0-32-powerpc-e500mc<3.19.0-32.37
3.19.0-32.37
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-32-powerpc-smp<3.19.0-32.37
3.19.0-32.37
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-32-powerpc64-emb<3.19.0-32.37
3.19.0-32.37
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-32-lowlatency<3.19.0-32.37
3.19.0-32.37
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-32-generic<3.19.0-32.37
3.19.0-32.37
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-32-powerpc64-smp<3.19.0-32.37
3.19.0-32.37
Ubuntu Ubuntu=15.04
All of the following
ubuntu/linux-image-3.19.0-32-generic-lpae<3.19.0-32.37
3.19.0-32.37
Ubuntu Ubuntu=15.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-32-powerpc-e500mc to a version that resolves this vulnerability.

    Fixed in 3.19.0-32.37
  2. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-32-powerpc-smp to a version that resolves this vulnerability.

    Fixed in 3.19.0-32.37
  3. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-32-powerpc64-emb to a version that resolves this vulnerability.

    Fixed in 3.19.0-32.37
  4. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-32-lowlatency to a version that resolves this vulnerability.

    Fixed in 3.19.0-32.37
  5. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-32-generic to a version that resolves this vulnerability.

    Fixed in 3.19.0-32.37
  6. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-32-powerpc64-smp to a version that resolves this vulnerability.

    Fixed in 3.19.0-32.37
  7. Upgrade

    Upgrade ubuntu/linux-image-3.19.0-32-generic-lpae to a version that resolves this vulnerability.

    Fixed in 3.19.0-32.37

Event History

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

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is CVE-2015-2925?

CVE-2015-2925 is a vulnerability that allows an attacker to escape bind mount containment and gain access to sensitive information.

2

What software versions are affected by USN-2799-1?

The affected software versions for USN-2799-1 include linux-image-3.19.0-32-powerpc-e500mc, linux-image-3.19.0-32-powerpc-smp, linux-image-3.19.0-32-powerpc64-emb, linux-image-3.19.0-32-lowlatency, linux-image-3.19.0-32-generic, linux-image-3.19.0-32-powerpc64-smp, and linux-image-3.19.0-32-generic-lpae.

3

How can I fix the vulnerability in USN-2799-1?

To fix the vulnerability in USN-2799-1, you should update the linux-image packages to version 3.19.0-32.37 or higher.

4

Where can I find more information about CVE-2015-2925?

You can find more information about CVE-2015-2925 on the Ubuntu security website.

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