{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "39f8ea46724efbed3ca021863a22337c31be264c"
            },
            {
              "fixed": "cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04"
            },
            {
              "fixed": "22586432c1aba89d9bd33f3173408dac830f220b"
            },
            {
              "fixed": "6eaed64a32e550daf0dc9549742b3ab9e41d984f"
            },
            {
              "fixed": "fe7ba73dde94c5f413b1588cd444b49105015dda"
            },
            {
              "fixed": "84858671842ae5857b9ed1202b62f9045373dcd1"
            },
            {
              "fixed": "ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755"
            },
            {
              "fixed": "e3e3bf40916c1e810df03958cfa7ba6883cdce79"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.12.0"
            },
            {
              "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": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89585.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nauxdisplay: charlcd: cancel backlight work on registration failure\n\nWith CONFIG_CHARLCD_BL_FLASH, charlcd_init() schedules bl_work before\ncharlcd_register() calls misc_register(). If registration fails, the\ncaller frees the charlcd object while delayed work still contains its\naddress.\n\nAdd charlcd_deinit() to cancel the delayed work and turn the backlight\noff. Use it for both registration rollback and normal unregistration.",
  "id": "CVE-2026-89585",
  "modified": "2026-09-15T03:30:46.785205165Z",
  "published": "2026-09-11T19:44:50.592Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/22586432c1aba89d9bd33f3173408dac830f220b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6eaed64a32e550daf0dc9549742b3ab9e41d984f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/84858671842ae5857b9ed1202b62f9045373dcd1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3e3bf40916c1e810df03958cfa7ba6883cdce79"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fe7ba73dde94c5f413b1588cd444b49105015dda"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89585.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89585"
    },
    {
      "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": "auxdisplay: charlcd: cancel backlight work on registration failure"
}