CVE-2026-80711
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e < 91ac995a6f4ddf4f92b231b080544abf23a9b871 | affected |
| Linux | Linux | f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e < b039f13e095d28a64ca6b21d0ee5440d8b048f37 | affected |
| Linux | Linux | f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e < ee2ea0c452edc0930e7395b080dccd5a1cb965e1 | affected |
| Linux | Linux | f4b782af61ae7bbf93008d5809b0e3a8ac2bb88e < 725668c6b6aa3971fe850659102c250d0d676e18 | affected |
| Linux | Linux | 6.7 | affected |
| Linux | Linux | 0 < 6.7 | unaffected |
| Linux | Linux | 6.12.103 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.44 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.8 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/91ac995a6f4ddf4f92b231b080544abf23a9b871
- https://git.kernel.org/stable/c/b039f13e095d28a64ca6b21d0ee5440d8b048f37
- https://git.kernel.org/stable/c/ee2ea0c452edc0930e7395b080dccd5a1cb965e1
- https://git.kernel.org/stable/c/725668c6b6aa3971fe850659102c250d0d676e18
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