USN-3099-2 Linux kernel vulnerabilities


Severity

High

Vendor

Canonical Ubuntu

Versions Affected
  • Canonical Ubuntu 14.04 LTS
Description

USN-3099-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS.

Vladimír Beneš discovered an unbounded recursion in the VLAN and TEB Generic Receive Offload (GRO) processing implementations in the Linux kernel. A remote attacker could use this to cause a stack corruption, leading to a denial of service (system crash). (CVE-2016-7039)

Marco Grassi discovered a use-after-free condition could occur in the TCP retransmit queue handling code in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2016-6828)

Pengfei Wang discovered a race condition in the Adaptec AAC RAID controller driver in the Linux kernel when handling ioctl()s. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-6480)

Affected Pivotal Products and Versions

Severity is high unless otherwise noted.

  • Cloud Foundry BOSH stemcells are vulnerable, including:
    • All versions prior to 3146.24
    • 3151.x versions prior to 3151.2
    • 3232.x versions prior to 3232.22
    • 3233.x versions prior to 3233.2
    • 3262.x versions prior to 3262.21
    • Other versions prior to 3263.7
  • PCF Ops Manager versions prior to 1.6.24 and 1.7.x versions prior to 1.7.16 and 1.8.x versions prior to 1.8.7
  • PCF Elastic Runtime versions prior to 1.6.45 and 1.7.x versions prior to 1.7.28 and 1.8.x versions prior to 1.8.8
  • RabbitMQ for PCF versions prior to 1.5.17 and 1.6.x versions prior to 1.6.9 and 1.7.x versions prior to 1.7.4
  • Redis for PCF versions prior to 1.4.32 and 1.5.x versions prior to 1.5.22 and 1.6.x versions prior to 1.6.2
  • PCF Metrics versions prior to 1.0.16 and 1.1.x versions prior to 1.1.3
  • PCF JMX Bridge (Ops Metrics) versions prior to 1.4.26 and 1.6.x versions prior to 1.6.20 and 1.7.x versions prior to 1.7.4 and 1.8.x versions prior to 1.8.6
  • PCF Log Search versions prior to 1.0.1
  • Spring Cloud Services for PCF versions prior to 1.0.16 and 1.1.x versions prior to 1.1.7 and 1.2.x versions prior to 1.2.1
  • Single Sign-On for PCF versions prior to 1.0.18, 1.1.x versions prior to 1.1.2 and 1.2.x versions prior to 1.2.2
  • Push Notification for PCF versions prior to 1.4.25
Mitigation

Users of affected versions should apply the following mitigation:

  • The Cloud Foundry team recommends upgrading to the following BOSH stemcells:
    • Upgrade all versions prior to 3146.x to 3146.24
    • Upgrade 3151.x versions to 3151.2
    • Upgrade 3232.x versions to 3232.22
    • Upgrade 3233.x versions to 3233.2
    • Upgrade 3262.x versions to 3262.21
    • Upgrade other versions to 3263.7
  • Upgrade PCF Ops Manager to 1.6.24 or 1.7.x versions to 1.7.16 or 1.8.x versions to 1.8.7
  • Upgrade PCF Elastic Runtime to 1.6.45 or 1.7.x versions to 1.7.28 or 1.8.x versions to 1.8.8
  • Upgrade RabbitMQ for PCF to 1.5.17 or 1.6.x versions to 1.6.9 or 1.7.x versions to 1.7.4
  • Upgrade Redis for PCF to 1.4.32 or 1.5.x versions to 1.5.22 or 1.6.x versions to 1.6.2
  • Upgrade PCF Metrics to 1.0.16 or 1.1.x versions prior to 1.1.3
  • Upgrade PCF JMX Bridge (Ops Metrics) to 1.4.26 or 1.6.x versions to 1.6.20 or 1.7.x versions to 1.7.4 or 1.8.x versions to 1.8.6
  • Upgrade PCF Log Search to 1.0.1
  • Upgrade Spring Cloud Services for PCF to 1.0.16 or 1.1.x versions to 1.1.7 or 1.2.x versions to 1.2.1
  • Upgrade Single Sign-On for PCF to 1.0.18, 1.1.x versions to 1.1.2 or 1.2.x versions to 1.2.2
  • Upgrade Push Notification for PCF to 1.4.25

Special Note for 1.7.x and 1.8.x Ops Manager Deployments

The 1.7.x release line of Ops Manager includes a new feature that allows tile stemcells to “float”, which will allow Operators to update their Ops Manager deployment once rather than installing all new Services product releases. If you upgrade one Service tile in Ops Manager 1.7.x or 1.8.x with the newly released stemcell, all tiles will automatically upgrade. For more information about the floating stemcell feature, refer to this document.

Credit

Vladimír Beneš, Marco Grassi, Pengfei Wang

References