New OVSwrap Linux Kernel Flaw Lets Local Users Gain Root via Open vSwitch

A memory corruption flaw in the Linux kernel's Open vSwitch datapath gives ordinary local users a path to root on a broad set of default-configured distributions, and a public exploit ships with pre-built records for roughly 800 kernel builds. The vulnerability, tracked as CVE-2026-64531 (CVSS score: 7.8) and codenamed OVSwrap by its discoverer, was disclosed by security researcher Asim

Because the vulnerability was publicly disclosed with technical detail, the risk of exploitation increases sharply until a patch is applied across all affected systems.

Finally, maintain offline, tested backups and a clear communication plan so that business continuity decisions are made ahead of time rather than under pressure.