{
  "fix": "RLSA-2021:4198",
  "url": "https://patchblox.com/security/fix/linux/rlsa-2021-4198",
  "summary": "RLSA-2021:4198, released November 9, 2021, fixes 2 CVEs in edk2 (version 0:20210527gite1999b264f1f-3.el8). None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "linux",
  "type": "advisory",
  "title": "edk2 security update",
  "released": "2021-11-09T08:37:02Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2021-23840, high severity",
  "supported": true,
  "cveCount": 2,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.50732,
  "maxCvss": 7.5,
  "vendorAdvisory": "https://errata.rockylinux.org/RLSA-2021:4198",
  "appliesTo": [
    {
      "product": "edk2",
      "productUrl": "https://patchblox.com/security/product/linux/edk2",
      "release": "rocky 8",
      "fixedVersion": "0:20210527gite1999b264f1f-3.el8",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-23840",
      "url": "https://patchblox.com/security/cve/CVE-2021-23840",
      "title": "libssl3t64: Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate mayoverflow the output length argument in some cas...",
      "priority": "High",
      "severity": "Low",
      "cvss": 7.5,
      "epss": 0.50732,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23841",
      "url": "https://patchblox.com/security/cve/CVE-2021-23841",
      "title": "edk2-aarch64: EDK (Embedded Development Kit) is a project to enable UEFI support for Virtual Machines",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.5,
      "epss": 0.0741,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}