CVE-2025-0647
In certain Arm CPUs, a CPP RCTX instruction executed on one Processing Element (PE) may inhibit...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2025-0647- CVSS 3.1
- 7.9 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-226
- Updated
- 2026-11-02
EUVDEUVD-2026-2516
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.
- Record
EUVD-2026-2516- CVSS 3.1
- 7.9 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-xxhx-7292-7rv8
In certain Arm CPUs, a CPP RCTX instruction executed on one Processing Element (PE) may inhibit...
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.
- Record
GHSA-xxhx-7292-7rv8- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-226
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-0647- CVSS 3.1
- 7.9 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-226
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2025-0647
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.
- Record
DEBIAN-CVE-2025-0647- CVSS 3.1
- 7.9 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
:unknown:Android |
SoCVersion:0 up to SoCVersion:2026-11-05, plus listed versions SoCVersion |
SoCVersion:2026-11-05 |
arm-trusted-firmwareDebian:12 |
All versions, plus listed versions 2.10.0+dfsg-12.10.10+dfsg-12.12.0+dfsg-12.12.0+dfsg-22.12.1+dfsg-1 Show 5 moreShow less2.12.16+dfsg-12.8.0+dfsg-12.9.0+dfsg-12.9.0+dfsg-22.9.0+dfsg-3 |
None known |
arm-trusted-firmwareDebian:13 |
All versions, plus listed versions 2.12.1+dfsg-12.12.16+dfsg-1 |
None known |
arm-trusted-firmwareDebian:14 |
before 2.12.16+dfsg-1, plus listed versions 2.12.1+dfsg-1 |
2.12.16+dfsg-1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-0647 is a high vulnerability (CVSS 7.9) in Arm C1-premium, published January 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 6th percentile. Fixed in :unknown: SoCVersion:2026-11-05.