{
  "fix": "ALAS2023-2023-189",
  "url": "https://patchblox.com/security/fix/linux/alas2023-2023-189",
  "summary": "ALAS2023-2023-189, released May 25, 2023, fixes 4 CVEs in microcode_ctl (version 2:2.1-53.amzn2023.0.1). None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "linux",
  "type": "advisory",
  "title": "microcode_ctl security update",
  "released": "2023-05-25T17:41:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2022-21216, high severity",
  "supported": true,
  "cveCount": 4,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00539,
  "maxCvss": 7.5,
  "vendorAdvisory": "https://alas.aws.amazon.com/AL2023/ALAS-2023-189.html",
  "appliesTo": [
    {
      "product": "microcode_ctl",
      "productUrl": "https://patchblox.com/security/product/linux/microcode-ctl",
      "release": "amzn 2023",
      "fixedVersion": "2:2.1-53.amzn2023.0.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2022-21216",
      "url": "https://patchblox.com/security/cve/CVE-2022-21216",
      "title": "microcode_ctl: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.9 Release Notes linked from t...",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.00539,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-33196",
      "url": "https://patchblox.com/security/cve/CVE-2022-33196",
      "title": "intel-microcode: Incorrect default permissions in some memory controller configurations for some Intel(R) Xeon(R) Processors when usin...",
      "priority": "High",
      "severity": "Medium",
      "cvss": 7.2,
      "epss": 0.00213,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-38090",
      "url": "https://patchblox.com/security/cve/CVE-2022-38090",
      "title": "intel-microcode: Improper isolation of shared resources in some Intel(R) Processors when using Intel(R) Software Guard Extensions may...",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 4.4,
      "epss": 0.00249,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-33972",
      "url": "https://patchblox.com/security/cve/CVE-2022-33972",
      "title": "intel-microcode: Incorrect calculation in microcode keying mechanism for some 3rd Generation Intel(R) Xeon(R) Scalable Processors may...",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 4.4,
      "epss": 0.0022,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}