In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: nv: Fix SPSR_EL2 restore in kvm_hyp_handle_mops()

kvm_hyp_handle_mops() resets the single-step state machine as part of
rewinding state for a MOPS exception by modifying vcpu_cpsr() and
writing the result directly into hardware.

In the case of nested virtualization, vcpu_cpsr() is a synthetic value
such that the rest of KVM can deal with vEL2 cleanly. That means the
value requires translation before being written into hardware, which is
unfortunately missing from the MOPS handler.

Fix it by directly modifying SPSR_EL2 and avoiding the synthetic state
altogether, which will be resynchronized on the next 'full' exit back
to KVM.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
2de451a329cf662beeba71f63c7f83ee24ca6642 affected < 10a568010e827108d149779908850afaec898846
2de451a329cf662beeba71f63c7f83ee24ca6642 affected < 884b44256041ec6b2dcbe8e6a67384d26145cba1
2de451a329cf662beeba71f63c7f83ee24ca6642 affected < dd3b237eb7780d65eae296d3d3a70012b6e7a02f
2de451a329cf662beeba71f63c7f83ee24ca6642 affected < ff1022c3de46753eb7eba2f6efd990569e66ff95
Linux Linux affected
Version Status Constraints
6.7 affected —
0 unaffected < 6.7
6.12.97 unaffected ≤ 6.12.*
6.18.40 unaffected ≤ 6.18.*
7.1.5 unaffected ≤ 7.1.*
7.2-rc4 unaffected ≤ *

No data.

No data.

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Fixes

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References
Link Providers
https://git.kernel.org/stable/c/10a568010e827108d149779908850afaec898846 cve-icon
https://git.kernel.org/stable/c/884b44256041ec6b2dcbe8e6a67384d26145cba1 cve-icon
https://git.kernel.org/stable/c/dd3b237eb7780d65eae296d3d3a70012b6e7a02f cve-icon
https://git.kernel.org/stable/c/ff1022c3de46753eb7eba2f6efd990569e66ff95 cve-icon
History

Mon, 27 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Fix SPSR_EL2 restore in kvm_hyp_handle_mops() kvm_hyp_handle_mops() resets the single-step state machine as part of rewinding state for a MOPS exception by modifying vcpu_cpsr() and writing the result directly into hardware. In the case of nested virtualization, vcpu_cpsr() is a synthetic value such that the rest of KVM can deal with vEL2 cleanly. That means the value requires translation before being written into hardware, which is unfortunately missing from the MOPS handler. Fix it by directly modifying SPSR_EL2 and avoiding the synthetic state altogether, which will be resynchronized on the next 'full' exit back to KVM.
Title KVM: arm64: nv: Fix SPSR_EL2 restore in kvm_hyp_handle_mops()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-27T20:10:42.259Z

Reserved: 2026-07-19T15:36:31.796Z

Link: CVE-2026-64555

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-28T03:45:05Z

Weaknesses

No weakness.