CVE-2026-80711
Description
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.
How to fix
- Linux Linux91ac995a6f4ddf4f92b231b080544abf23a9b871, b039f13e095d28a64ca6b21d0ee5440d8b048f37, ee2ea0c452edc0930e7395b080dccd5a1cb965e1, 725668c6b6aa3971fe850659102c250d0d676e18 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e ≤ v < 91ac995a6f4ddf4f92b231b080544abf23a9b871, f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e ≤ v < b039f13e095d28a64ca6b21d0ee5440d8b048f37, f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e ≤ v < ee2ea0c452edc0930e7395b080dccd5a1cb965e1, f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e ≤ v < 725668c6b6aa3971fe850659102c250d0d676e18, 6.7 | 91ac995a6f4ddf4f92b231b080544abf23a9b871, b039f13e095d28a64ca6b21d0ee5440d8b048f37, ee2ea0c452edc0930e7395b080dccd5a1cb965e1, 725668c6b6aa3971fe850659102c250d0d676e18 |
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