{
  "cveId": "CVE-2026-98972",
  "url": "https://patchblox.com/security/cve/CVE-2026-98972",
  "summary": "CVE-2026-98972 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98972 (version 7.2.11-1), released October 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "cgroup/cpuset: Don\u0027t access cpuset_cgrp_subsys.root in is_in_v2_mode()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  cgroup/cpuset: Don\u0027t access cpuset_cgrp_subsys.root in is_in_v2_mode()  After seeing the patch [1] to guard is_in_v2_mode() with RCU, it makes me realize that is_in_v2_mode() may be called in a context where a new cgroup filesystem is being rebound with stale cpuset_cgrp_subsys.root pointer. Avoid this potential UaF situation by adding a new cpuset_v2_mode flag which is set when the cpuset_v2_mode mount option is used. This flag is written into only when cpuset_bind() is being called with a stable cpuset_cgrp_subsys.root value. The is_in_v2_mode() helper is modified to read the new cpuset_v2_mode flag instead of accessing cpuset_cgrp_subsys.root directly.  [1] https://lore.kernel.org/lkml/20260929084124.626693-2-arighi@nvidia.com",
  "published": "2026-10-23T13:17:18Z",
  "severity": "Moderate",
  "cvss": 4.1,
  "epss": 0.00163,
  "epssPercentile": 0.05525,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98972",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.11-1",
      "fix": "DEBIAN-CVE-2026-98972",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98972",
      "released": "2026-10-24T13:25:57Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}