hwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 11 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
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.
References
European references
- ENISA EUVD · EUVD-2026-59293
- GCVE · GCVE-0-2026-72394
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 < a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3 ; affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 < 898ca04b096b9e4640300eab91468c826a1ec92b ; affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 < fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1 ; affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 < fe87b8dc67f1b2c64e76a66e78468c533d3c44ca |
| Linux · Linux | affected 6.9 ; unaffected 0 < 6.9 ; unaffected 6.12.97 ≤ 6.12.* ; unaffected 6.18.40 ≤ 6.18.* ; unaffected 7.1.5 ≤ 7.1.* ; unaffected 7.2 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |