{
  "cveId": "CVE-2026-89769",
  "url": "https://patchblox.com/security/cve/CVE-2026-89769",
  "summary": "CVE-2026-89769 is fixed in linux on 1 platform by DEBIAN-CVE-2026-89769 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  clocksource/drivers/nxp-pit: Fix IRQ leak on cpu...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  clocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path  When cpuhp_setup_state fails after pit_clockevent_per_cpu_init has successfully called request_irq, the error handling jumps directly to out_pit_clocksource_unregister without freeing the registered IRQ.  This leaks the IRQ line and, since kfree(pit) follows, leaves a dangling pointer registered as the interrupt handler\u0027s dev_id, potentially leading to a use-after-free if the IRQ fires afterwards.  Fix it by calling pit_clockevent_per_cpu_exit to properly release the IRQ before falling through to the existing cleanup chain.",
  "published": "2026-09-11T20:20:08Z",
  "severity": "high",
  "cvss": 7.4,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00166,
  "epssPercentile": 0.05936,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89769",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89769",
      "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"
  }
}