FKIE_CVE-2025-0647

Vulnerability from fkie_nvd - Published: 2026-01-14 11:15 - Updated: 2026-01-20 16:16
Severity ?
7.9 (High) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Summary
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.
References
arm-security@arm.comhttps://developer.arm.com/documentation/111546
134c704f-9b21-4f2e-91b3-4a467353bcc0https://graph.volerion.com/view?ID=CVE-2025-0647
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2025-0647",
  "lastModified": "2026-01-20T16:16:01.393",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 7.9,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.5,
        "impactScore": 5.8,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-01-14T11:15:50.027",
  "references": [
    {
      "source": "arm-security@arm.com",
      "url": "https://developer.arm.com/documentation/111546"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://graph.volerion.com/view?ID=CVE-2025-0647"
    }
  ],
  "sourceIdentifier": "arm-security@arm.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-226"
        }
      ],
      "source": "arm-security@arm.com",
      "type": "Secondary"
    }
  ]
}


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Detection rules are retrieved from Rulezet.