CVE-2026-80711 is a vulnerability in Linux Kernel
Published on August 28, 2026
power: supply: max17040: handle missing status supplier
In the Linux kernel, the following vulnerability has been resolved:
power: supply: max17040: handle missing status supplier
MAX17040 does not report charger state itself, so the driver forwards
POWER_SUPPLY_PROP_STATUS to a supplier power supply. If no supplier is
registered, power_supply_get_property_from_supplier() returns -ENODEV and
leaves the output value untouched.
max17040_get_property() currently ignores that error and returns success,
so userspace can read an uninitialized status value from the battery power
supply. This happens on systems that use the fuel gauge without a charger
supplier relationship in firmware.
Return POWER_SUPPLY_STATUS_UNKNOWN when no supplier provides STATUS, and
propagate other supplier lookup errors.
Products Associated with CVE-2026-80711
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Affected Versions
Linux:- Version f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e and below 91ac995a6f4ddf4f92b231b080544abf23a9b871 is affected.
- Version f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e and below b039f13e095d28a64ca6b21d0ee5440d8b048f37 is affected.
- Version f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e and below ee2ea0c452edc0930e7395b080dccd5a1cb965e1 is affected.
- Version f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e and below 725668c6b6aa3971fe850659102c250d0d676e18 is affected.
- Version 6.7 is affected.
- Before 6.7 is unaffected.
- Version 6.12.103, <= 6.12.* is unaffected.
- Version 6.18.44, <= 6.18.* is unaffected.
- Version 7.1.8, <= 7.1.* is unaffected.
- Version 7.2, <= * is unaffected.