Canonical Livepatch Service update – December 2016

Canonical

Canonical

on 21 December 2016

The following kernel security vulnerabilities were addressed through live patches on Ubuntu – to ensure you have the fixes, either install at ubuntu.com/livepatch or update to newest kernel and reboot.

Linux kernel vulnerability

7th December 2016 (LSN-0014-1)

Details:

  • A race condition in the af_packet implementation in the Linux kernel. A local unprivileged attacker could use this to cause a denial of service (system crash) or run arbitrary code with administrative privileges.
  • 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). 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.

Learn more

Linux kernel vulnerability

30th November 2016 (LSN-0013-1)

Details:

  • The keyring interface in the Linux kernel contained a buffer overflow when displaying timeout events via the /proc/keys interface. A local attacker could use this to cause a denial of service (system crash).
  • A use-after-free vulnerability during error processing in the recvmmsg(2) implementation in the Linux kernel. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
  • The driver for Areca RAID Controllers in the Linux kernel did not properly validate control messages. A local attacker could use this to cause a denial of service (system crash) or possibly gain privileges.
  • A stack-based buffer overflow in the Broadcom IEEE802.11n FullMAC driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly gain privileges.

Learn more

Linux kernel vulnerability

20th October 2016 (LSN-0012-1)

Details:

  • 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).
  • It was discovered that a race condition existed in the memory manager of the Linux kernel when handling copy-on-write breakage of private read-only memory mappings. A local attacker could use this to gain administrative privileges.

Learn more

Ubuntu cloud

Ubuntu offers all the training, software infrastructure, tools, services and support you need for your public and private clouds.

Sign up for email updates

Choose the topics you're interested in

 

Related posts

Storage Made Easy adds Charm to Canonical’s Juju ecosystem

Storage Made Easy (SME) today announced the availability of the Storage Made Easy™ Enterprise File Fabric™ charm through Canonical’s Juju charm store. The store provides access to a wide range of best practice solutions which…

NTT TechnoCross becomes Canonical Certified Support Partner in Japan

NTT TechnoCross Corporation has signed a partnership agreement with Canonical to provide strengthened OSS support to its customers in Japan including OpenStack deployments. NTT TechnoCross will provide Japanese support for domestic…

Meltdown, Spectre and Ubuntu: What you need to know

As details of the Meltdown and Spectre vulnerabilities1 have become clearer a number of statements have been published by the multiple vendors affected; Canonical has issued advisories and updates on fixes and mitigations, the latest of…