[Important] [Security] Virtuozzo ReadyKernel patch 142.0 for Virtuozzo Server 7.0, 7.5

Issue date: 2022-05-25

Applies to: Virtuozzo Server 7.0, Virtuozzo Server 7.5

Virtuozzo Advisory ID: VZA-2022-015

1. Overview

The cumulative Virtuozzo ReadyKernel patch was updated with stability fixes. The patch applies to all supported kernels of Virtuozzo Server 7.x.

2. Security Fixes

• [Important] [3.10.0-1127.8.2.vz7.158.8 to 3.10.0-1160.53.1.vz7.185.3] Setting release_agent could potentially lead to privilege escalation from unprivileged users inside a container to the container root. It couldn’t be exploited to escape containers. (CVE-2022-0492)

3. Installing the Update

Download, install, and immediately apply the patch to the current kernel by running readykernel update.

4. References

• https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-158.8-142.0-1.vl7/
• https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-163.46-142.0-1.vl7/
• https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-174.13-142.0-1.vl7/
• https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-183.5-142.0-1.vl7/
• https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-185.3-142.0-1.vl7/

The new and updated packages are listed in the JSON file.