CVE-2026-99168

A flaw was found in the Linux kernel's Microsoft Hyper-V Virtual Trust Level (mshv_vtl) driver. When setting up per-processor register pages, an allocation failure on one CPU leaves its page pointer uninitialized while a global flag is set by another CPU. A local user can exploit this issue by accessing the unallocated register memory mapping, causing the kernel to dereference a null pointer. The primary impact of this vulnerability is a system crash, resulting in a Denial of Service (DoS).

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.