CVE-2026-31553 HIGH

CVE-2026-31553: KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc()

Vendor Linux
Product Linux
Published April 24, 2026
Last update May 11, 2026

CVSS base score

8.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc() Using "(u64 __user *)hva + offset" to get the virtual addresses of S1/S2 descriptors looks really wrong, if offset is not zero. What we want to get for swapping is hva + offset, not hva + offset*8. ;-) Fix it.

Key dates

02Disclosure timeline

April 24, 2026 CVE published
May 11, 2026 Record updated