Use of Uninitialized Variable in Linux kernel - CVE-2026-80711
Published: August 28, 2026
Vulnerability identifier: #VU146079
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80711
CWE-ID: CWE-457
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to use of uninitialized data in max17040_get_property() in the max17040 battery driver when handling POWER_SUPPLY_PROP_STATUS without a registered supplier power supply. A local user can read the battery power supply status from userspace to disclose sensitive information.
This occurs on systems that use the fuel gauge without a charger supplier relationship in firmware.
Affected software
Linux kernel
How to mitigate CVE-2026-80711
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3