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7.1
HIGH CVSS 3.1
CVE-2026-72395
hwmon: (pmbus) Fix passing events to regulator core
Overview
Description

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.

Details
INFO

Published Date :

Aug. 15, 2026, 6:22 a.m.

Last Modified :

Aug. 17, 2026, 6:19 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-72395 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Pass regulator events bit by bit to the handler to address bypass.
  • Update the Linux kernel to the latest version.
  • Apply the provided patch for pmbus event handling.
  • Ensure regulator event handling is correctly implemented.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-72395.

URL Resource
https://git.kernel.org/stable/c/2106bf4056858fcce3624e0c51f6fee4d41d3f2f
https://git.kernel.org/stable/c/489291b6b56978cc50d34e8e13f9636ea296ba8a
https://git.kernel.org/stable/c/48fe43666950efefb7ac5fbdc012c1b3604096bf
https://git.kernel.org/stable/c/9ef7dacd44216bf5ea05c8aef49eba4d145f4047
https://git.kernel.org/stable/c/b0ff6b6ae9c5183ef701ece7016698bde5a5bfba
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72395 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-72395 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-72395 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-72395 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'b26849cffaa7c43355b82e9bef3725e786973a1a', 'lessThan': '2106bf4056858fcce3624e0c51f6fee4d41d3f2f', 'versionType': 'git'}, {'status': 'affected', 'version': 'acf04e2863132f6d9222f71f3a76fb9782cbe061', 'lessThan': '48fe43666950efefb7ac5fbdc012c1b3604096bf', 'versionType': 'git'}, {'status': 'affected', 'version': '4e9d723d9f198b86f6882a84c501ba1f39e8d055', 'lessThan': '489291b6b56978cc50d34e8e13f9636ea296ba8a', 'versionType': 'git'}, {'status': 'affected', 'version': '754bd2b4a084b90b5e7b630e1f423061a9b9b761', 'lessThan': 'b0ff6b6ae9c5183ef701ece7016698bde5a5bfba', 'versionType': 'git'}, {'status': 'affected', 'version': '754bd2b4a084b90b5e7b630e1f423061a9b9b761', 'lessThan': '9ef7dacd44216bf5ea05c8aef49eba4d145f4047', 'versionType': 'git'}, {'status': 'affected', 'version': '2c77ae315f3ce9d2c8e1609be74c9358c1fe4e07', 'versionType': 'git'}, {'status': 'affected', 'version': '6.6.143', 'lessThan': '6.6.145', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.92', 'lessThan': '6.12.97', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.18.21', 'lessThan': '6.18.40', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.19.11', 'lessThan': '6.20', 'versionType': 'semver'}], 'programFiles': ['drivers/hwmon/pmbus/pmbus_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '7.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '7.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/hwmon/pmbus/pmbus_core.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'b26849cffaa7c43355b82e9bef3725e786973a1a', 'lessThan': '2106bf4056858fcce3624e0c51f6fee4d41d3f2f', 'versionType': 'git'}, {'status': 'affected', 'version': 'acf04e2863132f6d9222f71f3a76fb9782cbe061', 'lessThan': '48fe43666950efefb7ac5fbdc012c1b3604096bf', 'versionType': 'git'}, {'status': 'affected', 'version': '4e9d723d9f198b86f6882a84c501ba1f39e8d055', 'lessThan': '489291b6b56978cc50d34e8e13f9636ea296ba8a', 'versionType': 'git'}, {'status': 'affected', 'version': '754bd2b4a084b90b5e7b630e1f423061a9b9b761', 'lessThan': 'b0ff6b6ae9c5183ef701ece7016698bde5a5bfba', 'versionType': 'git'}, {'status': 'affected', 'version': '754bd2b4a084b90b5e7b630e1f423061a9b9b761', 'lessThan': '9ef7dacd44216bf5ea05c8aef49eba4d145f4047', 'versionType': 'git'}, {'status': 'affected', 'version': '2c77ae315f3ce9d2c8e1609be74c9358c1fe4e07', 'versionType': 'git'}, {'status': 'affected', 'version': '6.6.143', 'lessThan': '6.6.145', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.92', 'lessThan': '6.12.97', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.18.21', 'lessThan': '6.18.40', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.19.11', 'lessThan': '6.20', 'versionType': 'semver'}], 'programFiles': ['drivers/hwmon/pmbus/pmbus_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '7.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '7.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/hwmon/pmbus/pmbus_core.c'], 'defaultStatus': 'affected'}]
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 15, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'b26849cffaa7c43355b82e9bef3725e786973a1a', 'lessThan': '2106bf4056858fcce3624e0c51f6fee4d41d3f2f', 'versionType': 'git'}, {'status': 'affected', 'version': 'acf04e2863132f6d9222f71f3a76fb9782cbe061', 'lessThan': '48fe43666950efefb7ac5fbdc012c1b3604096bf', 'versionType': 'git'}, {'status': 'affected', 'version': '4e9d723d9f198b86f6882a84c501ba1f39e8d055', 'lessThan': '489291b6b56978cc50d34e8e13f9636ea296ba8a', 'versionType': 'git'}, {'status': 'affected', 'version': '754bd2b4a084b90b5e7b630e1f423061a9b9b761', 'lessThan': 'b0ff6b6ae9c5183ef701ece7016698bde5a5bfba', 'versionType': 'git'}, {'status': 'affected', 'version': '754bd2b4a084b90b5e7b630e1f423061a9b9b761', 'lessThan': '9ef7dacd44216bf5ea05c8aef49eba4d145f4047', 'versionType': 'git'}, {'status': 'affected', 'version': '2c77ae315f3ce9d2c8e1609be74c9358c1fe4e07', 'versionType': 'git'}, {'status': 'affected', 'version': '6.6.143', 'lessThan': '6.6.145', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.92', 'lessThan': '6.12.97', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.18.21', 'lessThan': '6.18.40', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.19.11', 'lessThan': '6.20', 'versionType': 'semver'}], 'programFiles': ['drivers/hwmon/pmbus/pmbus_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '7.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '7.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/hwmon/pmbus/pmbus_core.c'], 'defaultStatus': 'affected'}]
    Added Description 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.
    Added Reference https://git.kernel.org/stable/c/2106bf4056858fcce3624e0c51f6fee4d41d3f2f
    Added Reference https://git.kernel.org/stable/c/489291b6b56978cc50d34e8e13f9636ea296ba8a
    Added Reference https://git.kernel.org/stable/c/48fe43666950efefb7ac5fbdc012c1b3604096bf
    Added Reference https://git.kernel.org/stable/c/9ef7dacd44216bf5ea05c8aef49eba4d145f4047
    Added Reference https://git.kernel.org/stable/c/b0ff6b6ae9c5183ef701ece7016698bde5a5bfba
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.1
Attack Vector
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