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Ubuntu 15.10 : linux-raspi2 vulnerability (USN-2852-1)

high Nessus Plugin ID 87535

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Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

Jann Horn discovered a ptrace issue with user namespaces in the Linux kernel. The namespace owner could potentially exploit this flaw by ptracing a root owned process entering the user namespace to elevate its privileges and potentially gain access outside of the namespace.
(http://bugs.launchpad.net/bugs/1527374)

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.

Solution

Update the affected linux-image-4.2-raspi2 package.

See Also

https://usn.ubuntu.com/2852-1/

Plugin Details

Severity: High

ID: 87535

File Name: ubuntu_USN-2852-1.nasl

Version: 2.11

Type: local

Agent: unix

Published: 12/21/2015

Updated: 4/2/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:15.10, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.2-raspi2

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Patch Publication Date: 12/19/2015

Vulnerability Publication Date: 12/19/2015

Reference Information

USN: 2852-1