{"id":"CVE-2026-89585","summary":"auxdisplay: charlcd: cancel backlight work on registration failure","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.","modified":"2026-09-13T03:47:19.467483098Z","published":"2026-09-11T19:44:50.592Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89585.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/84858671842ae5857b9ed1202b62f9045373dcd1"},{"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"39f8ea46724efbed3ca021863a22337c31be264c"},{"fixed":"fe7ba73dde94c5f413b1588cd444b49105015dda"},{"fixed":"84858671842ae5857b9ed1202b62f9045373dcd1"},{"fixed":"ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755"},{"fixed":"e3e3bf40916c1e810df03958cfa7ba6883cdce79"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89585.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.12.0"},{"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"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89585.json"}}],"schema_version":"1.9.0"}