{
  "fix": "RHSA-2026:77634",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2026-77634",
  "summary": "RHSA-2026:77634, released July 25, 2026, fixes 7 CVEs in kernel (version 6.12.0-55.109.1.el10_0). None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "linux",
  "type": "advisory",
  "title": "kernel security update",
  "released": "2026-07-25T13:45:36Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-43186, rated Critical",
  "supported": true,
  "cveCount": 7,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00659,
  "maxCvss": 9.8,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2026:77634",
  "appliesTo": [
    {
      "product": "kernel",
      "productUrl": "https://patchblox.com/security/product/linux/kernel",
      "release": "RHEL 10",
      "fixedVersion": "6.12.0-55.109.1.el10_0",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-43186",
      "url": "https://patchblox.com/security/cve/CVE-2026-43186",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ipv6: ioam: fix heap buffer overflow in __ioam6_...",
      "priority": "Urgent",
      "severity": "critical",
      "cvss": 9.8,
      "epss": 0.00642,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-52924",
      "url": "https://patchblox.com/security/cve/CVE-2026-52924",
      "title": "sctp: purge outqueue on stale COOKIE-ECHO handling",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 9.8,
      "epss": 0.00659,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-64007",
      "url": "https://patchblox.com/security/cve/CVE-2026-64007",
      "title": "kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: n...",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00514,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-64383",
      "url": "https://patchblox.com/security/cve/CVE-2026-64383",
      "title": "smb: client: fix double-free in SMB2_flush() replay",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00457,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-64386",
      "url": "https://patchblox.com/security/cve/CVE-2026-64386",
      "title": "smb: client: fix query_info() replay double-free",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00457,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-40237",
      "url": "https://patchblox.com/security/cve/CVE-2025-40237",
      "title": "kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system",
      "priority": "High",
      "severity": "important",
      "cvss": 7.1,
      "epss": 0.00216,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-45991",
      "url": "https://patchblox.com/security/cve/CVE-2026-45991",
      "title": "udf: fix partition descriptor append bookkeeping",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00177,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}