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.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 26 Jan 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Arm c1-premium Firmware
Arm c1-ultra Firmware
Arm cortex-a710 Firmware
Arm cortex-x2 Firmware
Arm cortex-x3 Firmware
Arm cortex-x4 Firmware
Arm cortex-x925 Firmware
Arm neoverse-n2
Arm neoverse-n2 Firmware
Arm neoverse-v2 Firmware
Arm neoverse-v3 Firmware
Arm neoverse-v3ae Firmware
CPEs cpe:2.3:h:arm:c1-premium:-:*:*:*:*:*:*:*
cpe:2.3:h:arm:c1-ultra:-:*:*:*:*:*:*:*
cpe:2.3:h:arm:cortex-a710:-:*:*:*:*:*:*:*
cpe:2.3:h:arm:cortex-x2:-:*:*:*:*:*:*:*
cpe:2.3:h:arm:cortex-x3:-:*:*:*:*:*:*:*
cpe:2.3:h:arm:cortex-x4:-:*:*:*:*:*:*:*
cpe:2.3:h:arm:cortex-x925:-:*:*:*:*:*:*:*
cpe:2.3:h:arm:neoverse-n2:-:*:*:*:*:*:*:*
cpe:2.3:h:arm:neoverse-v2:-:*:*:*:*:*:*:*
cpe:2.3:h:arm:neoverse-v3:-:*:*:*:*:*:*:*
cpe:2.3:h:arm:neoverse-v3ae:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:c1-premium_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:c1-ultra_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:cortex-a710_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:cortex-x2_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:cortex-x3_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:cortex-x4_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:cortex-x925_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:neoverse-n2_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:neoverse-v2_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:neoverse-v3_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:neoverse-v3ae_firmware:-:*:*:*:*:*:*:*
Vendors & Products Arm c1-premium Firmware
Arm c1-ultra Firmware
Arm cortex-a710 Firmware
Arm cortex-x2 Firmware
Arm cortex-x3 Firmware
Arm cortex-x4 Firmware
Arm cortex-x925 Firmware
Arm neoverse-n2
Arm neoverse-n2 Firmware
Arm neoverse-v2 Firmware
Arm neoverse-v3 Firmware
Arm neoverse-v3ae Firmware

Tue, 20 Jan 2026 16:15:00 +0000

Type Values Removed Values Added
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 7.9, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 15 Jan 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 15 Jan 2026 08:15:00 +0000

Type Values Removed Values Added
First Time appeared Arm
Arm c1-premium
Arm c1-ultra
Arm cortex-a710
Arm cortex-x2
Arm cortex-x3
Arm cortex-x4
Arm cortex-x925
Arm neoverse-v2
Arm neoverse-v3
Arm neoverse-v3ae
Arm neoverse N2
Vendors & Products Arm
Arm c1-premium
Arm c1-ultra
Arm cortex-a710
Arm cortex-x2
Arm cortex-x3
Arm cortex-x4
Arm cortex-x925
Arm neoverse-v2
Arm neoverse-v3
Arm neoverse-v3ae
Arm neoverse N2

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

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Arm

Published:

Updated: 2026-01-20T15:21:14.551Z

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

Link: CVE-2025-0647

cve-icon Vulnrichment

Updated: 2026-01-15T20:45:54.849Z

cve-icon NVD

Status : Analyzed

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

Modified: 2026-01-26T19:40:19.270

Link: CVE-2025-0647

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-15T08:03:33Z

Weaknesses