hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.17 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read If the fan data becomes 0 between the FAN_DATA_VALID() check and the FAN_PERIOD_TO_RPM() conversion, it will result in a divide-by-zero crash due to a race with a concurrent update of the cached fan value. Fix a TOCTOU issue by reading fan data once.
References
- https://git.kernel.org/stable/c/689a2ea75434131d0af58aeb7d51fde40e858b4d
- https://git.kernel.org/stable/c/009240d057e26831cc925feaba4c490209c1d0ba
- https://git.kernel.org/stable/c/d328175045176f85c15c369bd21dc551351e7935
- https://git.kernel.org/stable/c/832069bec79cf6f903441c5769d3cdba95d0af33
- https://git.kernel.org/stable/c/96ad57d31763559d376416cdf3bf5ae79bbbebec
- https://git.kernel.org/stable/c/76963b04b2d1c648d69949d8dd521e1ff7f40b51
- https://git.kernel.org/stable/c/1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3
European references
- ENISA EUVD · EUVD-2026-59739
- GCVE · GCVE-0-2026-74546
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
- CERTFR-2026-AVI-1232 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1163 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1090 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected fc958a61ff6d34a0ec42744d3ff524ee202b2e9f < 689a2ea75434131d0af58aeb7d51fde40e858b4d ; affected fc958a61ff6d34a0ec42744d3ff524ee202b2e9f < 009240d057e26831cc925feaba4c490209c1d0ba ; affected fc958a61ff6d34a0ec42744d3ff524ee202b2e9f < d328175045176f85c15c369bd21dc551351e7935 ; affected fc958a61ff6d34a0ec42744d3ff524ee202b2e9f < 832069bec79cf6f903441c5769d3cdba95d0af33 ; affected fc958a61ff6d34a0ec42744d3ff524ee202b2e9f < 96ad57d31763559d376416cdf3bf5ae79bbbebec ; affected fc958a61ff6d34a0ec42744d3ff524ee202b2e9f < 76963b04b2d1c648d69949d8dd521e1ff7f40b51 |
| Linux · Linux | affected 5.15 ; unaffected 0 < 5.15 ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.1.183 ≤ 6.1.* ; unaffected 6.6.151 ≤ 6.6.* ; unaffected 6.12.103 ≤ 6.12.* |
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 |