{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.8-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "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.",
  "id": "DEBIAN-CVE-2026-98309",
  "modified": "2026-10-07T04:47:40.953169697Z",
  "published": "2026-10-06T09:18:22.300Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98309"
    }
  ],
  "upstream": [
    "CVE-2026-98309"
  ]
}