The vulnerability of the mshv_vtl_ioctl_add_vtl0_mem() function in the drivers/hv/mshv_vtl_main.c driver for the Microsoft HyperV guest mode operating system on Linux allows a attacker to compromise the accessibility of protected information.

The vulnerability of the mshvvtlioctladdvtl0mem function in the drivers/hv/mshvvtlmain.c driver of the Microsoft HyperV guest mode operating system on Linux is related to incorrect validation of input data. Exploiting this vulnerability could allow an attacker to compromise the accessibility of...

CVE-2026-43348

In the Linux kernel, the following vulnerability has been resolved: mshvvtl: Fix vmemmapshift exceeding MAXFOLIOORDER When registering VTL0 memory via MSHVADDVTL0MEMORY, the kernel computes pgmap-vmemmapshift as the number of trailing zeros in the OR of startpfn and lastpfn, intending to use the...

CVE-2026-43348: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mshvvtl: Fix vmemmapshift exceeding MAXFOLIOORDER When registering VTL0 memory via MSHVADDVTL0MEMORY, the kernel computes pgmap-vmemmapshift as the number of trailing zeros in the OR of startpfn and lastpfn, intending to use the...