Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2748-1)

medium Nessus Plugin ID 86190

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2748-1 advisory.

- The get_bitmap_file function in drivers/md/md.c in the Linux kernel before 4.1.6 does not initialize a certain bitmap data structure, which allows local users to obtain sensitive information from kernel memory via a GET_BITMAP_FILE ioctl call. (CVE-2015-5697)

- The vhost_dev_ioctl function in drivers/vhost/vhost.c in the Linux kernel before 4.1.5 allows local users to cause a denial of service (memory consumption) via a VHOST_SET_LOG_FD ioctl call that triggers permanent file-descriptor allocation. (CVE-2015-6252)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-2748-1

Plugin Details

Severity: Medium

ID: 86190

File Name: ubuntu_USN-2748-1.nasl

Version: 2.13

Type: local

Agent: unix

Published: 9/29/2015

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2015-5697

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2015-6252

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-65-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-65-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-65-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-65-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-65-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-65-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-65-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-65-powerpc64-smp, cpe:/o:canonical:ubuntu_linux:14.04:-:lts

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2015

Vulnerability Publication Date: 8/31/2015

Reference Information

CVE: CVE-2015-5697, CVE-2015-6252

USN: 2748-1