{
  "id": "CVE-2026-98309",
  "url": "https://spydr.io/cve/CVE-2026-98309",
  "published": "2026-10-06T09:18:22.300Z",
  "modified": "2026-10-06T09:18:22.300Z",
  "score": null,
  "severity": null,
  "cvss_version": null,
  "vector": null,
  "score_source": null,
  "epss": 0.00175,
  "epss_percentile": 0.06384,
  "exploited": false,
  "kev": null,
  "ssvc_exploitation": null,
  "vendors": [
    "Linux"
  ],
  "products": [
    "Linux"
  ],
  "cwes": [],
  "description": "In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Use managed KMS polling to fix UAF on unbind vc4_kms_load() calls drm_kms_helper_poll_init() but the driver provides no matching drm_kms_helper_poll_fini(). The output poll work stays scheduled after unbind and runs on the freed drm_device: # modprobe vc4; rmmod vc4; sleep 10 BUG: KASAN: slab-use-after-free in delayed_work_timer_fn BUG: KASAN: slab-use-after-free in drm_client_dev_hotplug [drm] Workqueue: events output_poll_execute [drm_kms_helper] Allocated by task 171: __devm_drm_dev_alloc Freed by task 262 (rmmod): drm_dev_put / component_del Use drmm_kms_helper_poll_init() so polling is finalized with the device, as other drivers do.",
  "status": "Received",
  "score_type": null,
  "scores": {
    "cvss_v40": null,
    "cvss_v31": null,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/073a30d75f309812ed61af134f24ffef4107b13a",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/7f9780df677370a19b4ec9764f13b1b82073e0d9",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/b6beee927e7f4e3142032ff91b2d0417cdddc0f6",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/cf0c4432bda37b02e7d430ff5017228ceb7caf0c",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/ee507691c18f9fee5d4751e295ab9a7ff31d59ae",
      "tags": []
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98309",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}