CVE-2026-80711

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.

• https://git.kernel.org/stable/c/725668c6b6aa3971fe850659102c250d0d676e18
• https://git.kernel.org/stable/c/91ac995a6f4ddf4f92b231b080544abf23a9b871
• https://git.kernel.org/stable/c/b039f13e095d28a64ca6b21d0ee5440d8b048f37
• https://git.kernel.org/stable/c/ee2ea0c452edc0930e7395b080dccd5a1cb965e1

Published

Aug 28, 2026

Last Modified

Aug 28, 2026

Status

Received

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