Ubuntu 15.10 : linux vulnerability (USN-2803-1)

Medium Nessus Plugin ID 86813

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

Ben Serebrin discovered that the KVM hypervisor implementation in the Linux kernel did not properly catch Alignment Check exceptions. An attacker in a guest virtual machine could use this to cause a denial of service (system crash) in the host OS.

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-generic, linux-image-4.2-generic-lpae and / or linux-image-4.2-lowlatency packages.

See Also

https://usn.ubuntu.com/2803-1/

Plugin Details

Severity: Medium

ID: 86813

File Name: ubuntu_USN-2803-1.nasl

Version: 2.9

Type: local

Agent: unix

Published: 2015/11/10

Updated: 2019/09/18

Dependencies: 12634, 122878

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.9

Temporal Score: 3.6

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.2-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.2-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.2-lowlatency, 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: 2015/11/09

Vulnerability Publication Date: 2015/11/16

Reference Information

CVE: CVE-2015-5307

USN: 2803-1