{
  "cveId": "CVE-2026-74273",
  "url": "https://patchblox.com/security/cve/CVE-2026-74273",
  "summary": "CVE-2026-74273 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-74273, released August 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "cxl/region: Block region delete during region creation",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  cxl/region: Block region delete during region creation  Expand the range lock, rename it \u0022regions_lock\u0022, to disable region deletion in the critical period between construct_region() and attach_target(), as well as the period between device_add() and registering the remove actions.  Otherwise, userspace can confuse the kernel. It can violate the assumption the region stays registered through the completion of cxl_add_to_region(). It can violate the assumption that devm_add_action_or_reset() is working with a live \u0027struct cxl_region\u0027.  It is ok for the region to disappear outside of those windows as that mirrors device hotplug flows where the proper locks are held.",
  "published": "2026-08-15T06:22:26Z",
  "severity": "Moderate",
  "cvss": 5.5,
  "epss": 0.00168,
  "epssPercentile": 0.06126,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-74273",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-74273",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-74273",
      "released": "2026-08-15T22:38:55Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-74273",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-74273",
      "released": "2026-08-15T22:38:55Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}