CVE-2026-89462

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

power: supply: max17040: propagate register read errors

max17040_get_vcell() and max17040_get_soc() ignore errors returned by

regmap_read(). When an I2C transfer fails, the uninitialized register

value is converted and reported to userspace as a valid voltage or state

of charge. The polling worker can also replace the cached state of charge

with the bogus value and emit a spurious change event.

Propagate read errors through the power supply get_property callback and

keep the last valid cached state of charge when polling fails.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References