Note to readers

This publication does not currently meet the Government of Canada's Web Standards. The information remains valid.

Linux and FreeBSD Kernel Vulnerability

Number: AV18-125
Date: 07 August 2018

Purpose

The purpose of this advisory is to bring attention to a Linux and FreeBSD kernel TCP vulnerability VulnerabilityA flaw or weakness in the design or implementation of an information system or its environment that could be exploited to adversely affect an organization's assets or operations. .

Assessment

Vulnerability in the implementation of the TCP protocol has been discovered in the kernel of Linux and FreeBSD that may lead to system resource exhaustion.  A remote attacker may be able to trigger a denial-of-service condition against a system with an available open port.

Affected Versions:

  • Linux kernel versions 4.9 and greater
  • All supported versions of FreeBSD

CVE References: CVE-2018-5390, CVE-2018-6922

Suggested Action

CCIRC recommends that system administrators test and deploy the vendor-released updates to affected applications accordingly.

References:

Date modified: