{
  "fix": "RLSA-2021:5238",
  "url": "https://patchblox.com/security/fix/linux/rlsa-2021-5238",
  "summary": "RLSA-2021:5238, released December 21, 2021, fixes 2 CVEs across 15 products. None of them is reported as exploited. Patch Radar priority: Routine.",
  "platform": "linux",
  "type": "advisory",
  "title": "Security update for 15 packages",
  "released": "2021-12-21T09:11:21Z",
  "priority": "Routine",
  "priorityTier": 4,
  "priorityReason": "Closes 2 CVEs, none high severity",
  "supported": true,
  "cveCount": 2,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.0037,
  "maxCvss": 6.5,
  "vendorAdvisory": "https://errata.rockylinux.org/RLSA-2021:5238",
  "appliesTo": [
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      "supported": true
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    {
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      "productUrl": "https://patchblox.com/security/product/linux/libguestfs-winsupport",
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      "supported": true
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      "fixedVersion": "0:6.0.0-37.module\u002Bel8.5.0\u002B670\u002Bc4aa478c",
      "supported": true
    },
    {
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      "fixedVersion": "0:1.3.0-2.module\u002Bel8.7.0\u002B1084\u002B97b81f61",
      "supported": true
    },
    {
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      "supported": true
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      "supported": true
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    {
      "product": "perl-Sys-Virt",
      "productUrl": "https://patchblox.com/security/product/linux/perl-sys-virt",
      "release": "rocky 8",
      "fixedVersion": "0:6.0.0-1.module\u002Bel8.4.0\u002B534\u002B4680a14e",
      "supported": true
    },
    {
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      "productUrl": "https://patchblox.com/security/product/linux/qemu-kvm",
      "release": "rocky 8",
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      "supported": true
    },
    {
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    {
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  ],
  "cves": [
    {
      "cveId": "CVE-2021-20257",
      "url": "https://patchblox.com/security/cve/CVE-2021-20257",
      "title": "libguestfs-bash-completion: Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 6.5,
      "epss": 0.0037,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3930",
      "url": "https://patchblox.com/security/cve/CVE-2021-3930",
      "title": "qemu-kvm-block-gluster: Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 6.5,
      "epss": 0.00338,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}