{
  "fix": "RHSA-2026:1236",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2026-1236",
  "summary": "RHSA-2026:1236, released December 6, 2025, fixes 7 CVEs in kernel (version 6.12.0-55.55.1.el10_0). None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "linux",
  "type": "advisory",
  "title": "kernel security update",
  "released": "2025-12-06T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2025-40277, high severity",
  "supported": true,
  "cveCount": 7,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00254,
  "maxCvss": 7.8,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2026:1236",
  "appliesTo": [
    {
      "product": "kernel",
      "productUrl": "https://patchblox.com/security/product/linux/kernel",
      "release": "RHEL 10",
      "fixedVersion": "6.12.0-55.55.1.el10_0",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2025-40277",
      "url": "https://patchblox.com/security/cve/CVE-2025-40277",
      "title": "drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00254,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-37891",
      "url": "https://patchblox.com/security/cve/CVE-2025-37891",
      "title": "ALSA: ump: Fix buffer overflow at UMP SysEx message conversion",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00245,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-37819",
      "url": "https://patchblox.com/security/cve/CVE-2025-37819",
      "title": "irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00225,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-37789",
      "url": "https://patchblox.com/security/cve/CVE-2025-37789",
      "title": "net: openvswitch: fix nested key length validation in the set() action",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00223,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-40154",
      "url": "https://patchblox.com/security/cve/CVE-2025-40154",
      "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": "moderate",
      "cvss": 7.8,
      "epss": 0.00211,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-37761",
      "url": "https://patchblox.com/security/cve/CVE-2025-37761",
      "title": "kernel: In the Linux kernel, the following vulnerability has been resolved:\ndrm/xe: Fix an out-of-bounds shift when invalidat...",
      "priority": "High",
      "severity": "moderate",
      "cvss": 7.1,
      "epss": 0.0021,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-21815",
      "url": "https://patchblox.com/security/cve/CVE-2025-21815",
      "title": "kernel: In the Linux kernel, the following vulnerability has been resolved:\nmm/compaction: fix UBSAN shift-out-of-bounds warn...",
      "priority": "High",
      "severity": "moderate",
      "cvss": 7.1,
      "epss": 0.00193,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}