{
  "fix": "RHSA-2026:0271",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2026-0271",
  "summary": "RHSA-2026:0271, released October 15, 2025, fixes 8 CVEs in kernel (version 6.12.0-55.52.1.el10_0). None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "linux",
  "type": "advisory",
  "title": "kernel security update",
  "released": "2025-10-15T00:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2025-39925, rated Critical",
  "supported": true,
  "cveCount": 8,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00378,
  "maxCvss": 9.8,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2026:0271",
  "appliesTo": [
    {
      "product": "kernel",
      "productUrl": "https://patchblox.com/security/product/linux/kernel",
      "release": "RHEL 10",
      "fixedVersion": "6.12.0-55.52.1.el10_0",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2025-39925",
      "url": "https://patchblox.com/security/cve/CVE-2025-39925",
      "title": "can: j1939: implement NETDEV_UNREGISTER notification handler",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.0015,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-40300",
      "url": "https://patchblox.com/security/cve/CVE-2025-40300",
      "title": "x86/vmscape: Add conditional IBPB mitigation",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.3,
      "epss": 0.00378,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-39982",
      "url": "https://patchblox.com/security/cve/CVE-2025-39982",
      "title": "Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00282,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-39983",
      "url": "https://patchblox.com/security/cve/CVE-2025-39983",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: hci_event: Fix UAF in hci_conn_tx_deq...",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.00249,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-39806",
      "url": "https://patchblox.com/security/cve/CVE-2025-39806",
      "title": "kernel-64k-core: The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: H...",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00238,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-39883",
      "url": "https://patchblox.com/security/cve/CVE-2025-39883",
      "title": "mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory",
      "priority": "High",
      "severity": "Low",
      "cvss": 7.6,
      "epss": 0.00157,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-39981",
      "url": "https://patchblox.com/security/cve/CVE-2025-39981",
      "title": "Bluetooth: MGMT: Fix possible UAFs",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00153,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-39843",
      "url": "https://patchblox.com/security/cve/CVE-2025-39843",
      "title": "mm: slub: avoid wake up kswapd in set_track_prepare",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00117,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T06:34:28Z"
}