VulnerabilityPublished 11 Sep 2026Updated 21 Oct 2026

CVE-2026-89462: Linux kernel · power: supply: max17040: propagate register read errors

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in c7aa4c3708cc0d8487336f8281665eaea87130f6 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:07 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in c7aa4c3708cc0d8487336f8281665eaea87130f6, bcdcbef9c5e69a1e79c6b9f6a3434da2f68724ed, 2943a0edd4865ed744702ada647921c3981207f6 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 11 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ c6f4a42de60b981dd210de01cd3e575835e3158e, < c7aa4c3708cc0d8487336f8281665eaea87130f6	Fixed in c7aa4c3708cc0d8487336f8281665eaea87130f6
LinuxLinux	Affected ≥ c6f4a42de60b981dd210de01cd3e575835e3158e, < bcdcbef9c5e69a1e79c6b9f6a3434da2f68724ed	Fixed in bcdcbef9c5e69a1e79c6b9f6a3434da2f68724ed
LinuxLinux	Affected ≥ c6f4a42de60b981dd210de01cd3e575835e3158e, < 2943a0edd4865ed744702ada647921c3981207f6	Fixed in 2943a0edd4865ed744702ada647921c3981207f6
LinuxLinux	Affected ≥ c6f4a42de60b981dd210de01cd3e575835e3158e, < 659cc3d8d5ef246263873fce72c8cadeeed073cc	Fixed in 659cc3d8d5ef246263873fce72c8cadeeed073cc
LinuxLinux	Affected ≥ c6f4a42de60b981dd210de01cd3e575835e3158e, < 13fb0477da9b400071b9d518b24d6434c4965263	Fixed in 13fb0477da9b400071b9d518b24d6434c4965263
LinuxLinux	Affected =2.6.31	Fixed in–

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.

References

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