An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 14 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 9e-05}

epss

{'score': 0.0001}


cve-icon MITRE

Status: PUBLISHED

Assigner: Google

Published:

Updated: 2024-08-03T18:44:14.082Z

Reserved: 2021-01-05T00:00:00

Link: CVE-2021-22566

cve-icon Vulnrichment

Updated: 2024-08-03T18:44:14.082Z

cve-icon NVD

Status : Modified

Published: 2022-01-18T14:15:07.920

Modified: 2024-11-21T05:50:20.203

Link: CVE-2021-22566

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.