{
  "fix": "RHSA-2026:2821",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2026-2821",
  "summary": "RHSA-2026:2821, released March 12, 2026, fixes 3 CVEs across 12 products. None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "linux",
  "type": "advisory",
  "title": "Security update for 12 packages",
  "released": "2026-03-12T22:27:24Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2025-40168, high severity",
  "supported": true,
  "cveCount": 3,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.0042,
  "maxCvss": 8.8,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2026:2821",
  "appliesTo": [
    {
      "product": "kernel-rt",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.105.1.rt7.446.el8_10",
      "supported": true
    },
    {
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      "supported": true
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    {
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      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug",
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      "fixedVersion": "0:4.18.0-553.105.1.rt7.446.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-debug-core",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug-core",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.105.1.rt7.446.el8_10",
      "supported": true
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    {
      "product": "kernel-rt-debug-devel",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.105.1.rt7.446.el8_10",
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    {
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      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug-kvm",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.105.1.rt7.446.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-debug-modules",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug-modules",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.105.1.rt7.446.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-debug-modules-extra",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug-modules-extra",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.105.1.rt7.446.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-devel",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-devel",
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      "fixedVersion": "0:4.18.0-553.105.1.rt7.446.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-kvm",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-kvm",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.105.1.rt7.446.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-modules",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-modules",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.105.1.rt7.446.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-modules-extra",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-modules-extra",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.105.1.rt7.446.el8_10",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2025-40168",
      "url": "https://patchblox.com/security/cve/CVE-2025-40168",
      "title": "smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 8.1,
      "epss": 0.0042,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-53762",
      "url": "https://patchblox.com/security/cve/CVE-2023-53762",
      "title": "kernel-default: The SUSE Linux Enterprise 15 SP6 kernel was updated to fix various security issues\n\nThe following security issues wer...",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00248,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-40304",
      "url": "https://patchblox.com/security/cve/CVE-2025-40304",
      "title": "fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00144,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}