Kernel security update: Virtuozzo ReadyKernel patch 70.0 for Virtuozzo 7.0.8 and 7.0.8 HF1¶
Issue date: 2019-01-24
Applies to: Virtuozzo 7.0
Virtuozzo Advisory ID: VZA-2019-001
1. Overview¶
The cumulative Virtuozzo ReadyKernel patch was updated with security and stability fixes. The patch applies to Virtuozzo kernels 3.10.0-862.9.1.vz7.63.3 (7.0.8) and 3.10.0-862.11.6.vz7.64.7 (7.0.8 HF1).
2. Security Fixes¶
[Moderate] A flaw was found in the implementation of ebtables in the Linux kernel. A local attacker in a container could exploit it to consume large amounts of memory, eventually causing denial of service on the host. (PSBM-90803)
[Low] vhost: kernel crash (access out of bounds) in memcpy_fromiovecend(). (PSBM-90291)
3. Bug Fixes¶
tcache was not shrunk in some situations. (PSBM-89403)
Kernel crash (access out of bounds) in SyS_mincore(). (PSBM-90329)
4. Installing the Update¶
Download, install, and immediately apply the patch to the current kernel by running ‘readykernel update’.
5. References¶
https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-63.3-70.0-1.vl7/
https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-64.7-70.0-1.vl7/
The JSON file with the list of new and updated packages is available at https://docs.virtuozzo.com/vza/VZA-2019-001.json.