Kernel security update: Virtuozzo ReadyKernel patch 11.0 for kernels 3.10.0-327.18.2.vz7.15.2 (Virtuozzo 7.0.0) and 3.10.0-327.36.1.vz7.18.7 (Virtuozzo 7.0.1)¶
Issue date: 2017-02-21
Applies to: Virtuozzo 7.0
Virtuozzo Advisory ID: VZA-2017-006
The cumulative Virtuozzo ReadyKernel patch updated with security fixes as well as a usability bug fix. The patch applies to Virtuozzo versions 7.0.0 and 7.0.1.
2. Security Fixes¶
[Moderate] A flaw was found in the way nfnetlink validated length of batch messages that could allow a user logged in to a container as root to cause a general protection fault and crash the host. (PSBM-57511)
[Moderate] A flaw was found in the way nfnetlink handled errors while processing batch messages that could allow a user logged in to a container as root to trigger use after free and crash the host. (PSBM-57499)
3. Bug Fixes¶
It was not possible to set up port forwarding in containers for which the ‘–netfilter’ option was set to ‘full’. (PSBM-59983)
4. Installing the Update¶
Download, install, and instantly apply the patch to the current kernel by running ‘readykernel update’.
The JSON file with the list of new and updated packages is available at http://docs.virtuozzo.com/vza/VZA-2017-006.json.