Important kernel security update: New kernel 2.6.32-042stab142.1; Virtuozzo 6.0 Update 12 Hotfix 50 (6.0.12-3755)

Issue date: 2020-01-31

Applies to: Virtuozzo 6.0

Virtuozzo Advisory ID: VZA-2020-011

1. Overview

This update provides a new kernel 2.6.32-042stab142.1 for Virtuozzo 6.0. It is based on the RHEL 6.10 kernel 2.6.32-754.27.1.el6 and inherits security and stability fixes from it. The new kernel also provides internal stability fixes.

2. Security Fixes

  • [Important] Kernel: KVM: OOB memory access via mmio ring buffer. This issue is not critical for Virtuozzo 6.0, as it does not use KVM. (CVE-2019-14821)

3. Bug Fixes

  • vzfs-to-ploop conversion on running container could crash the host. (PSBM-99030, PSBM-100878)

  • Container stop operation could hang. (PSBM-100203)

  • Container restore operation could crash the host due to incorrect symbolic link processing. (OVZ-7147)

4. Installing the Update

Install the update with ‘yum update’. Reboot the host and switch to the new kernel.

The JSON file with the list of new and updated packages is available at