{"id":"CVE-2026-80711","summary":"power: supply: max17040: handle missing status supplier","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: max17040: handle missing status supplier\n\nMAX17040 does not report charger state itself, so the driver forwards\nPOWER_SUPPLY_PROP_STATUS to a supplier power supply. If no supplier is\nregistered, power_supply_get_property_from_supplier() returns -ENODEV and\nleaves the output value untouched.\n\nmax17040_get_property() currently ignores that error and returns success,\nso userspace can read an uninitialized status value from the battery power\nsupply. This happens on systems that use the fuel gauge without a charger\nsupplier relationship in firmware.\n\nReturn POWER_SUPPLY_STATUS_UNKNOWN when no supplier provides STATUS, and\npropagate other supplier lookup errors.","modified":"2026-08-30T03:48:22.730789515Z","published":"2026-08-28T06:53:10.631Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80711.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/725668c6b6aa3971fe850659102c250d0d676e18"},{"type":"WEB","url":"https://git.kernel.org/stable/c/91ac995a6f4ddf4f92b231b080544abf23a9b871"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b039f13e095d28a64ca6b21d0ee5440d8b048f37"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ee2ea0c452edc0930e7395b080dccd5a1cb965e1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80711.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80711"},{"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":"f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e"},{"fixed":"91ac995a6f4ddf4f92b231b080544abf23a9b871"},{"fixed":"b039f13e095d28a64ca6b21d0ee5440d8b048f37"},{"fixed":"ee2ea0c452edc0930e7395b080dccd5a1cb965e1"},{"fixed":"725668c6b6aa3971fe850659102c250d0d676e18"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80711.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.103"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.44"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80711.json"}}],"schema_version":"1.9.0"}