power: supply: max17040: propagate register read errors (CVE-2026-89462) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89462

power: supply: max17040: propagate register read errors

Answer in brief

CVE-2026-89462 records a Unknown severity vulnerability in power: supply: max17040: propagate register read errors. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 11, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=c6f4a42de60b981dd210de01cd3e575835e3158e <2943a0edd4865ed744702ada647921c3981207f6 \|\| >=c6f4a42de60b981dd210de01cd3e575835e3158e <13fb0477da9b400071b9d518b24d6434c4965263 \|\| >=c6f4a42de60b981dd210de01cd3e575835e3158e <c7aa4c3708cc0d8487336f8281665eaea87130f6 \|\| >=c6f4a42de60b981dd210de01cd3e575835e3158e <659cc3d8d5ef246263873fce72c8cadeeed073cc	2943a0edd4865ed744702ada647921c3981207f6, 13fb0477da9b400071b9d518b24d6434c4965263, c7aa4c3708cc0d8487336f8281665eaea87130f6, 659cc3d8d5ef246263873fce72c8cadeeed073cc
Linux/Linuxgeneric	2.6.31	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 2943a0edd4865ed744702ada647921c3981207f6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.