{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7103b99b031cb0ff6979331757bfc4893f37ae9e"
            },
            {
              "fixed": "f64b437641b5a70c18bb0fd38da2b69d8926c871"
            },
            {
              "fixed": "91e12b0fbd7047d02bf4ef4dbc491b9ef0159250"
            },
            {
              "fixed": "2071624c3d0f497ca91da78858e6f30d7112fea6"
            },
            {
              "fixed": "30b0d44c978bbc857bd68b71dab371805653de70"
            },
            {
              "fixed": "be61c8c6252671ecf1fee0ad90f87669e0be1e20"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.8.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89938.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF\n\nThe atlas driver requests its hardware data-ready IRQ with\ndevm_request_threaded_irq(); its threaded handler queues an irq_work,\natlas_work_handler(), that calls iio_trigger_poll(data-\u003etrig).\n\nThe IRQ is devm-managed, so free_irq() runs from the devres unwind after\natlas_remove() returns without flushing that irq_work.  Once a buffer is\nenabled, conversion-complete IRQs keep firing and queueing it; a pending\nirq_work can therefore run after the unwind has freed atlas_data/indio_dev\nand the trigger, when atlas_work_handler() derives the atlas_data pointer\nvia container_of() and dereferences data-\u003etrig, a use-after-free.\n\nCall iio_trigger_poll_nested() directly from the threaded handler instead\nof bouncing through irq_work.  free_irq() then drains the threaded handler,\nclosing the window; other iio drivers with a threaded data-ready IRQ do the\nsame (e.g. bmi270).\n\nThis issue was found by an in-house static analysis tool.",
  "id": "CVE-2026-89938",
  "modified": "2026-09-18T03:30:25.032013998Z",
  "published": "2026-09-16T10:32:27.012Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2071624c3d0f497ca91da78858e6f30d7112fea6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/30b0d44c978bbc857bd68b71dab371805653de70"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91e12b0fbd7047d02bf4ef4dbc491b9ef0159250"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be61c8c6252671ecf1fee0ad90f87669e0be1e20"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f64b437641b5a70c18bb0fd38da2b69d8926c871"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89938.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89938"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF"
}