Kernel security update: Virtuozzo ReadyKernel patch 41.1 for Virtuozzo 7.0.4, 7.0.4 HF3, 7.0.5, and 7.0.6

The cumulative Virtuozzo ReadyKernel patch was updated with security and stability fixes. The patch applies to Virtuozzo kernels 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), 3.10.0-514.26.1.vz7.33.22 (Virtuozzo 7.0.5), and 3.10.0-693.1.1.vz7.37.30 (Virtuozzo 7.0.6).
Vulnerability id: CVE-2017-15115
The sctp_do_peeloff() function in the Linux kernel before 4.14 did not check whether the intended netns was used in a peel-off action, which allowed local users to cause a denial of service (use-after-free in sctp_cmp_addr_exact() resulting in system crash) or possibly have unspecified other impact via crafted system calls.