pmbus regulator

About this tag
The pmbus regulator tag on WindowsForum.com covers Linux kernel vulnerabilities and fixes related to the PMBus (Power Management Bus) regulator subsystem. Discussions focus on concurrency bugs, such as CVE-2026-31486, where a race condition in the hwmon pmbus/core path allowed regulator voltage operations to access shared state without proper mutex protection. The fix required redesigning notification handling to avoid deadlocks, highlighting the importance of synchronization in kernel development. These threads serve as case studies for Linux system administrators and developers interested in power management, hardware monitoring, and kernel stability.

  1. CVE-2026-31486: Mutex + worker redesign fixes PMBus regulator race in Linux

    The Linux kernel has a new CVE tied to a subtle but important synchronization bug in the PMBus regulator path, and this one is a good example of how a seemingly narrow race condition can ripple into broader reliability concerns. CVE-2026-31486 covers a fix in hwmon: (pmbus/core) Protect...
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    • cve-2026-31486 kernel synchronization linux kernel pmbus regulator
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    • Forum: Security Alerts

  2. CVE-2026-31486: Linux PMBus Deadlock Fix Shows Concurrency Matters

    CVE-2026-31486 is a useful reminder that some of the most serious Linux kernel bugs are not glamorous memory-corruption exploits but plain old synchronization failures that can still destabilize a system. In this case, the flaw sits in the hwmon pmbus/core path, where regulator voltage...
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    • concurrency bug cve 2026 linux kernel pmbus regulator
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    • Forum: Security Alerts