{
  "fix": "ELSA-2021-3057",
  "url": "https://patchblox.com/security/fix/linux/elsa-2021-3057",
  "summary": "ELSA-2021-3057, released August 11, 2021, fixes 3 CVEs across 20 products. One of them is being exploited (CVE-2021-22555); 1 on CISA KEV. Patch Radar priority: Patch now.",
  "platform": "linux",
  "type": "advisory",
  "title": "Security update for 20 packages",
  "released": "2021-08-11T00:00:00Z",
  "priority": "Patch now",
  "priorityTier": 1,
  "priorityReason": "Closes CVE-2021-22555, exploited (CISA KEV)",
  "supported": true,
  "cveCount": 3,
  "exploitedCveCount": 1,
  "kevCveCount": 1,
  "ransomwareCveCount": 0,
  "maxEpss": 0.78684,
  "maxCvss": 7.8,
  "vendorAdvisory": "https://linux.oracle.com/errata/ELSA-2021-3057.html",
  "appliesTo": [
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      "productUrl": "https://patchblox.com/security/product/linux/bpftool",
      "release": "ol 8",
      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
    },
    {
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      "productUrl": "https://patchblox.com/security/product/linux/kernel",
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      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
    },
    {
      "product": "kernel-abi-stablelists",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-abi-stablelists",
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      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
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    {
      "product": "kernel-core",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-core",
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      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
    },
    {
      "product": "kernel-cross-headers",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-cross-headers",
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      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
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    {
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      "supported": true
    },
    {
      "product": "kernel-debug-core",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-debug-core",
      "release": "ol 8",
      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
    },
    {
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      "productUrl": "https://patchblox.com/security/product/linux/kernel-debug-devel",
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      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
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    {
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      "release": "ol 8",
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      "supported": true
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      "release": "ol 8",
      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
    },
    {
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      "productUrl": "https://patchblox.com/security/product/linux/kernel-devel",
      "release": "ol 8",
      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
    },
    {
      "product": "kernel-doc",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-doc",
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      "supported": true
    },
    {
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      "productUrl": "https://patchblox.com/security/product/linux/kernel-headers",
      "release": "ol 8",
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      "supported": true
    },
    {
      "product": "kernel-modules",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-modules",
      "release": "ol 8",
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      "supported": true
    },
    {
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      "productUrl": "https://patchblox.com/security/product/linux/kernel-modules-extra",
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      "supported": true
    },
    {
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      "productUrl": "https://patchblox.com/security/product/linux/kernel-tools",
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      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
    },
    {
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      "productUrl": "https://patchblox.com/security/product/linux/kernel-tools-libs",
      "release": "ol 8",
      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
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      "release": "ol 8",
      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
    },
    {
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      "productUrl": "https://patchblox.com/security/product/linux/perf",
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      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
    },
    {
      "product": "python3-perf",
      "productUrl": "https://patchblox.com/security/product/linux/python3-perf",
      "release": "ol 8",
      "fixedVersion": "0:4.18.0-305.12.1.el8_4",
      "supported": true
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  ],
  "cves": [
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      "cveId": "CVE-2021-22555",
      "url": "https://patchblox.com/security/cve/CVE-2021-22555",
      "title": "bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: r...",
      "priority": "Patch now",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.78684,
      "kev": true,
      "ransomware": false,
      "exploited": true,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-22543",
      "url": "https://patchblox.com/security/cve/CVE-2021-22543",
      "title": "kpatch-patch-4_18_0-305_3_1: This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of...",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.0066,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3609",
      "url": "https://patchblox.com/security/cve/CVE-2021-3609",
      "title": "bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: r...",
      "priority": "High",
      "severity": "Important",
      "cvss": 7,
      "epss": 0.00431,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T06:34:28Z"
}