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CVE-2026-89462

UnknownEPSS 0.17%

Last modified

CVE-2026-89462 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.17%

6.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= c6f4a42de60b981dd210de01cd3e575835e3158e, < abf348c40cd409db72758377f1eb6ed400c981c6; >= c6f4a42de60b981dd210de01cd3e575835e3158e, < bcdcbef9c5e69a1e79c6b9f6a3434da2f68724ed; >= c6f4a42de60b981dd210de01cd3e575835e3158e, < 2943a0edd4865ed744702ada647921c3981207f6; >= c6f4a42de60b981dd210de01cd3e575835e3158e, < 13fb0477da9b400071b9d518b24d6434c4965263; >= c6f4a42de60b981dd210de01cd3e575835e3158e, < c7aa4c3708cc0d8487336f8281665eaea87130f6; >= c6f4a42de60b981dd210de01cd3e575835e3158e, < 659cc3d8d5ef246263873fce72c8cadeeed073cc
LinuxLinux2.6.31

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-89462?
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.
How severe is CVE-2026-89462?
Severity scoring for CVE-2026-89462 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-89462?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST