Important kernel security update: Virtuozzo ReadyKernel patch 40.0 for Virtuozzo 7.0.4 and 7.0.4 HF3

Issue date: 2017-12-18

Applies to: Virtuozzo 7.0

Virtuozzo Advisory ID: VZA-2017-115

1. Overview

The cumulative Virtuozzo ReadyKernel patch was updated with security and stability fixes. The patch applies to Virtuozzo kernels 3.10.0-514.16.1.vz7.30.10 (Virtuozzo 7.0.4) and 3.10.0-514.16.1.vz7.30.15 (Virtuozzo 7.0.4 HF3)

2. Security Fixes

  • [Important] Potential use-after-free in the processing of namespaces. (PSBM-78904)

3. Bug Fixes

  • The kernel could consider a container stopped before the resources of that container, for example, VEIP addresses, have been released. As a result, the system could fail to restart the container. (PSBM-78078)

4. Installing the Update

Download, install, and instantly apply the patch to the current kernel by running ‘readykernel update’.