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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00209.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
7e1449cd15d1096157d1a9923b82e37602fb7eb0 affected < a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3
7e1449cd15d1096157d1a9923b82e37602fb7eb0 affected < 898ca04b096b9e4640300eab91468c826a1ec92b
7e1449cd15d1096157d1a9923b82e37602fb7eb0 affected < fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1
7e1449cd15d1096157d1a9923b82e37602fb7eb0 affected < fe87b8dc67f1b2c64e76a66e78468c533d3c44ca
Linux Linux affected
Version Status Constraints
6.9 affected —
0 unaffected < 6.9
6.12.97 unaffected ≤ 6.12.*
6.18.40 unaffected ≤ 6.18.*
7.1.5 unaffected ≤ 7.1.*
7.2-rc2 unaffected ≤ *

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/898ca04b096b9e4640300eab91468c826a1ec92b cve-icon cve-icon
https://git.kernel.org/stable/c/a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3 cve-icon cve-icon
https://git.kernel.org/stable/c/fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1 cve-icon cve-icon
https://git.kernel.org/stable/c/fe87b8dc67f1b2c64e76a66e78468c533d3c44ca cve-icon cve-icon
History

Sat, 15 Aug 2026 11:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-369

Sat, 15 Aug 2026 06:00:00 +0000

Type Values Removed Values 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.
Title hwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-15T05:56:21.707Z

Reserved: 2026-08-09T03:40:39.924Z

Link: CVE-2026-72394

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-15T06:22:12.943

Modified: 2026-08-15T06:22:12.943

Link: CVE-2026-72394

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-15T11:30:07Z

Weaknesses