Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : linux-hwe, linux-lts-trusty, linux-lts-xenial vulnerability (USN-3256-2)
High Nessus Plugin ID 99198
SynopsisThe remote Ubuntu host is missing one or more security-related patches.
DescriptionUSN-3256-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 16.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel for each of the respective prior Ubuntu LTS releases.
Andrey Konovalov discovered that the AF_PACKET implementation in the Linux kernel did not properly validate certain block-size data. A local attacker could use this to cause a denial of service (system crash).
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpdate the affected packages.