{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "490d84f6d73c12f4204241cff8651eed60aae914"
            },
            {
              "fixed": "9a951931d4b4084acd64fa55fc3672a9da45ddf9"
            },
            {
              "fixed": "a3adb63b121937b97f7fdc51e96564c7c799538b"
            },
            {
              "fixed": "9c6ceb0949227c1f0cf0e19393daec72d9889871"
            },
            {
              "fixed": "0fbd5c2327020858c45b2d1c65775d64cdeca523"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "e448dfd6d3ec944411f6575bc24e4f8baa1e297f"
            },
            {
              "last_affected": "2781b86d7e45de09befa5ace296b66787146561f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.18.19"
            },
            {
              "fixed": "4.19"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.19.2"
            },
            {
              "fixed": "4.20"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.20.0"
            },
            {
              "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-2026-89899.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cec: disable delayed work before freeing an interrupted transmit\n\ncec_transmit_msg_fh() drops adap-\u003elock to wait for a blocking transmit in\nwait_for_completion_killable(). If that wait is interrupted by a signal,\ncancel_delayed_work_sync() can run before the CEC kthread arms the reply\ntimeout via schedule_delayed_work(\u0026data-\u003ework) in cec_transmit_done_ts().\nThe work is then armed after the cancel, and the data is freed with its\ndelayed_work still pending:\n\n  ODEBUG: free active (active state 0) object: ... hint: cec_wait_timeout\n\nUse disable_delayed_work_sync(): it cancels the work and disables it, so\nthe later schedule_delayed_work() becomes a no-op and the work cannot be\nre-armed. The data is freed right after, so it need not be re-enabled.",
  "id": "CVE-2026-89899",
  "modified": "2026-09-18T03:30:48.971625645Z",
  "published": "2026-09-16T10:31:59.589Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0fbd5c2327020858c45b2d1c65775d64cdeca523"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a951931d4b4084acd64fa55fc3672a9da45ddf9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9c6ceb0949227c1f0cf0e19393daec72d9889871"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a3adb63b121937b97f7fdc51e96564c7c799538b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89899.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89899"
    },
    {
      "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: cec: disable delayed work before freeing an interrupted transmit"
}