In certain Arm CPUs, a CPP RCTX instruction executed on one Processing Element (PE) may inhibit TLB invalidation when a TLBI is issued to the PE, either by the same PE or another PE in the shareability domain. In this case, the PE may retain stale TLB entries which should have been invalidated by the TLBI.
History

Wed, 14 Jan 2026 11:15:00 +0000

Type Values Removed Values Added
Description In certain Arm CPUs, a CPP RCTX instruction executed on one Processing Element (PE) may inhibit TLB invalidation when a TLBI is issued to the PE, either by the same PE or another PE in the shareability domain. In this case, the PE may retain stale TLB entries which should have been invalidated by the TLBI.
Weaknesses CWE-226
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Arm

Published:

Updated: 2026-01-14T10:58:44.342Z

Reserved: 2025-01-22T14:26:41.767Z

Link: CVE-2025-0647

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-01-14T11:15:50.027

Modified: 2026-01-14T11:15:50.027

Link: CVE-2025-0647

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.