{"id":"CVE-2026-89585","revision":"b99cd9335c4c42eaae771bb869fc868d","records":[{"revision":"b99cd9335c4c42eaae771bb869fc868d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89585","aliases":[],"title":"auxdisplay: charlcd: cancel backlight work on registration failure","description":"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.","state":0,"publishedAt":"2026-09-11T19:44:50.592+00:00","modifiedAt":"2026-10-19T08:49:17.989+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/auxdisplay/charlcd.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"39f8ea46724efbed3ca021863a22337c31be264c\",\n                            \"lessThan\": \"cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"39f8ea46724efbed3ca021863a22337c31be264c\",\n                            \"lessThan\": \"22586432c1aba89d9bd33f3173408dac830f220b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"39f8ea46724efbed3ca021863a22337c31be264c\",\n                            \"lessThan\": \"6eaed64a32e550daf0dc9549742b3ab9e41d984f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"39f8ea46724efbed3ca021863a22337c31be264c\",\n                            \"lessThan\": \"fe7ba73dde94c5f413b1588cd444b49105015dda\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"39f8ea46724efbed3ca021863a22337c31be264c\",\n                            \"lessThan\": \"84858671842ae5857b9ed1202b62f9045373dcd1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"39f8ea46724efbed3ca021863a22337c31be264c\",\n                            \"lessThan\": \"ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"39f8ea46724efbed3ca021863a22337c31be264c\",\n                            \"lessThan\": \"e3e3bf40916c1e810df03958cfa7ba6883cdce79\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/auxdisplay/charlcd.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/cd97b3c68fe3c06c8067cc59d7dff976c5b7ea04","https://git.kernel.org/stable/c/22586432c1aba89d9bd33f3173408dac830f220b","https://git.kernel.org/stable/c/6eaed64a32e550daf0dc9549742b3ab9e41d984f","https://git.kernel.org/stable/c/fe7ba73dde94c5f413b1588cd444b49105015dda","https://git.kernel.org/stable/c/84858671842ae5857b9ed1202b62f9045373dcd1","https://git.kernel.org/stable/c/ff2fb3c1e60cb247ea3e28c0ea0bea81c18f7755","https://git.kernel.org/stable/c/e3e3bf40916c1e810df03958cfa7ba6883cdce79"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89585","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89585","identifiers":["CVE-2026-89585"]},"retained":false,"historicalAffected":[]}],"coverage":[]}