{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c184dcd282337c09695a4c1761d7ac77fdc8fb7d"
            },
            {
              "fixed": "aaf76794b870b0f391eff339252a2e2e22f33a4a"
            },
            {
              "fixed": "f7ff5adb63c1b277565afa54ccc0924d841b4a52"
            },
            {
              "fixed": "140ecbcbf978fbe60f83f8d4f8b1199029a5c763"
            },
            {
              "fixed": "ec82b0cf7f75fd95802592dcc9560fc7f529bba4"
            },
            {
              "fixed": "5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5"
            },
            {
              "fixed": "bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146"
            },
            {
              "fixed": "99cd62b9b1c818d6d01a87be9a8e5796314150a2"
            },
            {
              "fixed": "4e143d662ca94888b494b2427fc9e34494eb933a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.30"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "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-2026-89893.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cx23885: cancel NetUP CI work before teardown\n\nnetup_ci_exit() frees a netup_ci_state while its work item,\nnetup_read_ci_status(), may still be pending or running on the system\nworkqueue. The worker obtains the state with container_of() and\ndereferences it, so it must not outlive the state.\n\nnetup_ci_init() queues the initial status read, and CI GPIO interrupts\nsubsequently queue the same work from netup_ci_slot_status(). During\nremove, cx23885_finidev() calls free_irq() before the CI device is\nunregistered. free_irq() prevents further IRQ handlers from running,\nbut does not drain work queued previously, so the worker can run after\nnetup_ci_exit() frees the state.\n\nCall cancel_work_sync() before dvb_ca_en50221_release() and kfree().\n\nThis issue was found by an in-house static analysis tool.",
  "id": "CVE-2026-89893",
  "modified": "2026-09-18T03:30:29.619317520Z",
  "published": "2026-09-16T10:31:55.374Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/140ecbcbf978fbe60f83f8d4f8b1199029a5c763"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e143d662ca94888b494b2427fc9e34494eb933a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99cd62b9b1c818d6d01a87be9a8e5796314150a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aaf76794b870b0f391eff339252a2e2e22f33a4a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec82b0cf7f75fd95802592dcc9560fc7f529bba4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7ff5adb63c1b277565afa54ccc0924d841b4a52"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89893.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89893"
    },
    {
      "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": "media: cx23885: cancel NetUP CI work before teardown"
}