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Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3084-1)

medium Nessus Plugin ID 93604

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3084-1 advisory.

 Pengfei Wang discovered a race condition in the audit subsystem in the Linux kernel. A local attacker could use this to corrupt audit logs or disrupt system-call auditing. (CVE-2016-6136)

 It was discovered that the powerpc and powerpc64 hypervisor-mode KVM implementation in the Linux kernel for did not properly maintain state about transactional memory. An unprivileged attacker in a guest could cause a denial of service (CPU lockup) in the host OS. (CVE-2016-5412)

 Pengfei Wang discovered a race condition in the Chrome OS embedded controller device driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-6156)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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-3084-1

Plugin Details

Severity: Medium

ID: 93604

File Name: ubuntu_USN-3084-1.nasl

Version: 2.15

Type: local

Agent: unix

Published: 9/20/2016

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.4

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

CVSS Score Source: CVE-2016-6136

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-38-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-38-powerpc64-emb, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-38-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-38-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-38-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-38-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-38-powerpc-smp

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/19/2016

Vulnerability Publication Date: 8/6/2016

Reference Information

CVE: CVE-2016-5412, CVE-2016-6136, CVE-2016-6156

USN: 3084-1