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

Medium Nessus Plugin ID 87535


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


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.

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.


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

Plugin Details

Severity: Medium

ID: 87535

File Name: ubuntu_USN-2852-1.nasl

Version: $Revision: 2.4 $

Type: local

Agent: unix

Published: 2015/12/21

Modified: 2016/10/26

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.9

Temporal Score: 5.1

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

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

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/12/19

Reference Information

OSVDB: 119409, 132029, 132030, 132031

USN: 2852-1