{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "bee33f22d7c30626e711b4900e3f460b6e0e104f"
            },
            {
              "fixed": "d53c29a89a15e56a1797f3ef249955e544782e04"
            },
            {
              "fixed": "cdcd861123248e871c2ec2be968b0a1b2a5a34b0"
            },
            {
              "fixed": "05520e035f8332c8e33f3011b5ca016fde61793d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.18.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89769.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nclocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path\n\nWhen cpuhp_setup_state fails after pit_clockevent_per_cpu_init has\nsuccessfully called request_irq, the error handling jumps directly to\nout_pit_clocksource_unregister without freeing the registered IRQ.\n\nThis leaks the IRQ line and, since kfree(pit) follows, leaves a\ndangling pointer registered as the interrupt handler's dev_id,\npotentially leading to a use-after-free if the IRQ fires afterwards.\n\nFix it by calling pit_clockevent_per_cpu_exit to properly release the\nIRQ before falling through to the existing cleanup chain.",
  "id": "CVE-2026-89769",
  "modified": "2026-09-13T03:30:33.454114240Z",
  "published": "2026-09-11T19:47:08.870Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05520e035f8332c8e33f3011b5ca016fde61793d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cdcd861123248e871c2ec2be968b0a1b2a5a34b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d53c29a89a15e56a1797f3ef249955e544782e04"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89769.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89769"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "clocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path"
}