CVE-2026-89462

power: supply: max17040: propagate register read errors

State: Published
Severity: Not scored
Published: Sep 11, 2026
Updated: Oct 30, 2026
Reserved: Sep 11, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	c6f4a42de60b981dd210de01cd3e575835e3158e to before abf348c40cd409db72758377f1eb6ed400c981c6Affected c6f4a42de60b981dd210de01cd3e575835e3158e to before bcdcbef9c5e69a1e79c6b9f6a3434da2f68724edAffected c6f4a42de60b981dd210de01cd3e575835e3158e to before 2943a0edd4865ed744702ada647921c3981207f6Affected c6f4a42de60b981dd210de01cd3e575835e3158e to before 13fb0477da9b400071b9d518b24d6434c4965263Affected c6f4a42de60b981dd210de01cd3e575835e3158e to before c7aa4c3708cc0d8487336f8281665eaea87130f6Affected c6f4a42de60b981dd210de01cd3e575835e3158e to before 659cc3d8d5ef246263873fce72c8cadeeed073ccAffected
LinuxLinux	2.6.31Affected before 2.6.31Not affected 6.1.191 through 6.1.Not affected 6.6.160 through 6.6.Not affected 6.12.109 through 6.12.Not affected 6.18.50 through 6.18.Not affected 7.2.4 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

c6f4a42de60b981dd210de01cd3e575835e3158e to before abf348c40cd409db72758377f1eb6ed400c981c6Affected
c6f4a42de60b981dd210de01cd3e575835e3158e to before bcdcbef9c5e69a1e79c6b9f6a3434da2f68724edAffected
c6f4a42de60b981dd210de01cd3e575835e3158e to before 2943a0edd4865ed744702ada647921c3981207f6Affected
c6f4a42de60b981dd210de01cd3e575835e3158e to before 13fb0477da9b400071b9d518b24d6434c4965263Affected
c6f4a42de60b981dd210de01cd3e575835e3158e to before c7aa4c3708cc0d8487336f8281665eaea87130f6Affected
c6f4a42de60b981dd210de01cd3e575835e3158e to before 659cc3d8d5ef246263873fce72c8cadeeed073ccAffected

LinuxLinux

2.6.31Affected
before 2.6.31Not affected
6.1.191 through 6.1.*Not affected
6.6.160 through 6.6.*Not affected
6.12.109 through 6.12.*Not affected
6.18.50 through 6.18.*Not affected
7.2.4 through 7.2.*Not affected
7.3 and laterNot affected

References

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