CVE-2026-72394

0.0

hwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero

Overview
Vulnerability Timeline

Overview

Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero Sashiko reports: In the aspeed-g6-pwm-tacho driver, the aspeed_tach_val_to_rpm() function calculates the fan RPM using the tachometer value. However, it does not check if the tachometer value is zero before performing the division. If the hardware reports a tachometer value of 0 (which can happen due to an extremely fast pulse, a stuck edge, or a hardware glitch), the calculated tach_div evaluates to 0. The subsequent call to do_div() with tach_div as the divisor triggers a divide-by-zero exception, leading to a kernel panic. Check the divisor against zero to fix the problem.

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-2026-72394 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

Solution

Prevent kernel panic by checking divisor before division.

Check divisor for zero before division.
Update the Linux kernel.
Apply vendor-provided patches.

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-2026-72394.

URL	Resource
https://git.kernel.org/stable/c/898ca04b096b9e4640300eab91468c826a1ec92b
https://git.kernel.org/stable/c/a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3
https://git.kernel.org/stable/c/fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1
https://git.kernel.org/stable/c/fe87b8dc67f1b2c64e76a66e78468c533d3c44ca

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72394 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-2026-72394 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-2026-72394 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-2026-72394 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
Changed	Affected	[{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': 'a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3', 'versionType': 'git'}, {'status': 'affected', 'version': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': '898ca04b096b9e4640300eab91468c826a1ec92b', 'versionType': 'git'}, {'status': 'affected', 'version': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': 'fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1', 'versionType': 'git'}, {'status': 'affected', 'version': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': 'fe87b8dc67f1b2c64e76a66e78468c533d3c44ca', 'versionType': 'git'}], 'programFiles': ['drivers/hwmon/aspeed-g6-pwm-tach.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.9', 'versionType': 'semver'}, {'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/aspeed-g6-pwm-tach.c'], 'defaultStatus': 'affected'}]	[{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': 'a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3', 'versionType': 'git'}, {'status': 'affected', 'version': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': '898ca04b096b9e4640300eab91468c826a1ec92b', 'versionType': 'git'}, {'status': 'affected', 'version': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': 'fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1', 'versionType': 'git'}, {'status': 'affected', 'version': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': 'fe87b8dc67f1b2c64e76a66e78468c533d3c44ca', 'versionType': 'git'}], 'programFiles': ['drivers/hwmon/aspeed-g6-pwm-tach.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.9', 'versionType': 'semver'}, {'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/aspeed-g6-pwm-tach.c'], 'defaultStatus': 'affected'}]

New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Aug. 15, 2026

Action	Type	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': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': 'a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3', 'versionType': 'git'}, {'status': 'affected', 'version': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': '898ca04b096b9e4640300eab91468c826a1ec92b', 'versionType': 'git'}, {'status': 'affected', 'version': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': 'fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1', 'versionType': 'git'}, {'status': 'affected', 'version': '7e1449cd15d1096157d1a9923b82e37602fb7eb0', 'lessThan': 'fe87b8dc67f1b2c64e76a66e78468c533d3c44ca', 'versionType': 'git'}], 'programFiles': ['drivers/hwmon/aspeed-g6-pwm-tach.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.9', 'versionType': 'semver'}, {'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/aspeed-g6-pwm-tach.c'], 'defaultStatus': 'affected'}]
Added	Description	In the Linux kernel, the following vulnerability has been resolved: hwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero Sashiko reports: In the aspeed-g6-pwm-tacho driver, the aspeed_tach_val_to_rpm() function calculates the fan RPM using the tachometer value. However, it does not check if the tachometer value is zero before performing the division. If the hardware reports a tachometer value of 0 (which can happen due to an extremely fast pulse, a stuck edge, or a hardware glitch), the calculated tach_div evaluates to 0. The subsequent call to do_div() with tach_div as the divisor triggers a divide-by-zero exception, leading to a kernel panic. Check the divisor against zero to fix the problem.
Added	Reference	https://git.kernel.org/stable/c/898ca04b096b9e4640300eab91468c826a1ec92b
Added	Reference	https://git.kernel.org/stable/c/a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3
Added	Reference	https://git.kernel.org/stable/c/fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1
Added	Reference	https://git.kernel.org/stable/c/fe87b8dc67f1b2c64e76a66e78468c533d3c44ca

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.

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