Virtuozzo ReadyKernel patch 134.0 for Virtuozzo Server 7.0, 7.5

Issue date: 2021-10-13

Applies to: Virtuozzo Server 7.0, Virtuozzo Server 7.5

Virtuozzo Advisory ID: VZA-2021-049

1. Overview

The cumulative Virtuozzo ReadyKernel patch was updated with a stability fix. The patch applies to the kernels 3.10.0-1062.12.1.vz7.131.10 (Virtuozzo Server 7.0.13), 3.10.0-1127.8.2.vz7.151.14 (Virtuozzo Server 7.0.14), 3.10.0-1127.8.2.vz7.158.8 (Virtuozzo Server 7.0.14), 3.10.0-1127.18.2.vz7.163.46 (Virtuozzo Server 7.5), 3.10.0-1160.21.1.vz7.174.13 (Virtuozzo Server 7.5 Update 1).

2. Bug Fixes

[3.10.0-1062.12.1.vz7.131.10 to 3.10.0-1160.21.1.vz7.174.13] Kernel crash due to lack of enough skb headroom. It was found that the kernel could crash (skb_under_panic) when TEE target mirrors traffic to another interface. In this case skb may not have enough headroom to be processed correctly. It had been fixed for IPv4 but IPv6 continued to have the bug. (PSBM-130907)

3. Installing the Update

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

4. References

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