Important kernel security update: Virtuozzo ReadyKernel patch 13.0 for 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), and 3.10.0-327.36.1.vz7.20.18 (Virtuozzo 7.0.3)¶

1. Overview¶

The cumulative Virtuozzo ReadyKernel patch updated with security fixes. The patch applies to Virtuozzo versions 7.0.0, 7.0.1, and 7.0.3.

2. Security Fixes¶

• [Important] The tcp_splice_read function in net/ipv4/tcp.c in the Linux kernel before 4.9.11 allows remote attackers to cause a denial of service (infinite loop and soft lockup) via vectors involving a TCP packet with the URG flag. (CVE-2017-6214)

• [Moderate] A privileged user inside a container could cause a host kernel crash in udp_lib_get_port(). (PSBM-57512)

3. Installing the Update¶

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

4. References¶

• https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-15.2-13.0-1.vl7/

• https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-18.7-13.0-1.vl7/

• https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-20.18-13.0-1.vl7/

• https://access.redhat.com/security/cve/CVE-2017-6214

The JSON file with the list of new and updated packages is available at http://docs.virtuozzo.com/vza/VZA-2017-010.json.