Kernel security update: Virtuozzo ReadyKernel patch 33.1 for Virtuozzo 7.0.x

Issue date: 2017-10-05

Applies to: Virtuozzo 7.0

Virtuozzo Advisory ID: VZA-2017-091

1. Overview

The cumulative Virtuozzo ReadyKernel patch was updated with security and stability fixes. The patch applies to Virtuozzo kernels 3.10.0-327.18.2.vz7.15.2 (Virtuozzo 7.0.0), 3.10.0-327.36.1.vz7.18.7 (Virtuozzo 7.0.1), 3.10.0-327.36.1.vz7.20.18 (Virtuozzo 7.0.3), 3.10.0-514.16.1.vz7.30.10 (Virtuozzo 7.0.4), 3.10.0-514.16.1.vz7.30.15 (Virtuozzo 7.0.4 HF3), and 3.10.0-514.26.1.vz7.33.22 (Virtuozzo 7.0.5).

2. Security Fixes

  • [Moderate] It was discovered that the key management subsystem of the Linux kernel could perform incorrect update operations on uninstantiated keys. A local unprivileged user could exploit this flaw to cause a NULL pointer dereference in the kernel and crash it. (PSBM-73342)

3. Bug Fixes

  • autofs: unbalanced pid get/put operation in the error path in autofs4_fill_super(). (PSBM-71536)

4. Installing the Update

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