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.
Affected versions
Linux kernel versions
2.6.31
and later are affected. Fixed in
6.12.109,
6.18.50,
7.2.4,
7.3-rc1
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-89462?
CVE-2026-89462 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.31 onward and has been patched in 6.12.109, 6.18.50, 7.2.4 and others. CVE-2026-89462 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-89462?
Yes. CVE-2026-89462 has been patched. Fixed versions include 6.12.109, 6.18.50, 7.2.4 and others. If you are running Linux kernel 2.6.31 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-89462 actively exploited?
No. CVE-2026-89462 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.