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

8.8 / 10

HIGH

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

Description

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.

AI Analysis

KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc()

Basic Information

ID CVE-2026-31553

Source Linux

Published Apr 24, 2026 at 14:35

Modified Apr 27, 2026 at 14:04

Affected Product

Vendor Linux

Product Linux

Version f6927b41d57390c597a126063e2e518911976878

Affected Versions Linux Linux f6927b41d57390c597a126063e2e518911976878
Linux Linux f6927b41d57390c597a126063e2e518911976878
Linux Linux 6.19

AI Assessment

AI Score 8.8 / 10

AI Severity High

Vendor Linux

Product Linux Kernel

Version 6.19, f6927b41d57390c597a126063e2e518911976878

References

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    "published": "2026-04-24T14:35:37.828Z",
    "modified": "2026-04-27T14:04:01.366Z",
    "type": "cve",
    "title": "KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc()",
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