CVE-2026-98199: hwmon: (pmbus/core) increase number of phases and add new mask
Published Oct 6, 2026
·Updated
hwmon: (pmbus/core) increase number of phases and add new mask
Affected Software
1 affected component
Linux Linux kernel
Event History
Oct 6, 2026
CVE Published
via MITRE·08:44 AM
Data Sourced
via MITRE·08:44 AM
Description
Data Sourced
via NVD·09:18 AM
Description
Oct 7, 2026
Data Sourced
via Microsoft·08:02 AM
DescriptionSeverityWeakness
Sep 6, 58736
Event
via FIRST·11:15 PM
Frequently Asked Questions
1
Which systems are potentially affected?
Linux systems using the mp2975 driver with devices supporting up to 14 phases, or the mp2856 driver with devices supporting up to 12 phases, are identified as having potential exposure. The issue can occur when probing affected chips.
2
What operation can trigger the problem?
The potential out-of-bounds writes occur during probing of affected chips. The underlying condition is support for more than 10 phases per page while the PMBus core had an insufficient phase limit.