{
  "cveId": "CVE-2026-90432",
  "url": "https://patchblox.com/security/cve/CVE-2026-90432",
  "summary": "CVE-2026-90432 is fixed in linux on 1 platform by DEBIAN-CVE-2026-90432 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  sched_ext: Abort directly from the hardlockup ha...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  sched_ext: Abort directly from the hardlockup handler  scx_hardlockup() defers the abort to an irq_work because exit claiming used to take scx_sched_lock and couldn\u0027t run from NMI. The deferral is now unnecessary - claiming is NMI-safe and asserting -\u003Eaborting is exactly what breaks the live-locks that hard-lock CPUs. Call handle_lockup() directly and drop the irq_work. This also makes the self-detected case recoverable: the perf watchdog fires on the hard-locked CPU itself, where a queued irq_work never runs with IRQs off.  Also fix the return value: %true used to be returned whenever sched_ext was loaded, suppressing the kernel\u0027s hardlockup report even when the abort was refused. Return %true only when this call initiated the abort.",
  "published": "2026-09-17T17:17:48Z",
  "severity": "",
  "epss": 0.00198,
  "epssPercentile": 0.09576,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-90432",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-90432",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}