High 7.1Published Aug 15, 2026

CVE-2026-72395hwmon: (pmbus) Fix passing events to regulator core

Updated under an hour ago (Oct 28, 2026, 4:10 AM ET)

Does this affect you?

It affects Linux. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: hwmon: (pmbus) Fix passing events to regulator core Sashiko reports: Commit 754bd2b4a084 ("hwmon: (pmbus/core) Protect regulator operations with mutex") introduced a worker to batch regulator events over time using atomic_or(). The delayed worker then passes the combined bitmask unmodified to regulator_notifier_call_chain(). The core regulator subsystem's regulator_handle_critical() function evaluates the event parameter using a strict switch statement. If multiple distinct faults occur before the worker runs (e.g., REGULATOR_EVENT_UNDER_VOLTAGE | REGULATOR_EVENT_OVER_CURRENT), the combined bitmask fails to match any case. This leaves the reason as NULL and completely bypasses the critical hw_protection_trigger(). Fix the problem by passing events bit by bit to the regulator event handler.

CVSS: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Aug 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from b26849cffaa7c43355b82e9bef3725e786973a1a before 2106bf4056858fcce3624e0c51f6fee4d41d3f2f; from acf04e2863132f6d9222f71f3a76fb9782cbe061 before 48fe43666950efefb7ac5fbdc012c1b3604096bf; from 4e9d723d9f198b86f6882a84c501ba1f39e8d055 before 489291b6b56978cc50d34e8e13f9636ea296ba8a; from 754bd2b4a084b90b5e7b630e1f423061a9b9b761 before b0ff6b6ae9c5183ef701ece7016698bde5a5bfba; 754bd2b4a084b90b5e7b630e1f423061a9b9b761 builds before 9ef7dacd44216bf5ea05c8aef49eba4d145f4047; 2c77ae315f3ce9d2c8e1609be74c9358c1fe4e07; from 6.6.143 before 6.6.145; from 6.12.92 before 6.12.97; and 2 more ranges	CNA record

References

References

https://git.kernel.org/stable/c/2106bf4056858fcce3624e0c51f6fee4d41d3f2f
https://git.kernel.org/stable/c/48fe43666950efefb7ac5fbdc012c1b3604096bf
https://git.kernel.org/stable/c/489291b6b56978cc50d34e8e13f9636ea296ba8a
https://git.kernel.org/stable/c/b0ff6b6ae9c5183ef701ece7016698bde5a5bfba
https://git.kernel.org/stable/c/9ef7dacd44216bf5ea05c8aef49eba4d145f4047

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.