{
  "id": "CVE-2022-33986",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2022-11-15T00:15:12.353",
  "lastModified": "2022-11-18T15:48:27.837",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "DMA attacks on the parameter buffer used by the VariableRuntimeDxe software SMI handler could lead to a TOCTOU attack. DMA attacks on the parameter buffer used by the software SMI handler used by the driver VariableRuntimeDxe could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM. This issue was discovered by Insyde engineering during a security review. This issue is fixed in Kernel 5.4: 05.44.23 and Kernel 5.5: 05.52.23. CWE-367 CWE-367 Report at: https://www.insyde.com/security-pledge/SA-2022056"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 0.5,
        "impactScore": 5.9
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:insyde:kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.4",
              "versionEndExcluding": "5.4.05.44.23",
              "matchCriteriaId": "A5CC2DFA-DE56-4615-8F35-84F3ACD3B541"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:insyde:kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.5",
              "versionEndExcluding": "5.5.05.52.23",
              "matchCriteriaId": "9786B2BB-8754-4BA4-868E-FA2468D13AD2"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.insyde.com/security-pledge",
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.insyde.com/security-pledge/SA-2022056",
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}