hwmon: (w83791d) remove fan/pwm 4-5 sysfs group on remove (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.12 % · percentile 2 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83791d) remove fan/pwm 4-5 sysfs group on remove When the fan/pwm 4-5 pins are not used as GPIO, w83791d_probe() creates the w83791d_group_fanpwm45 sysfs group on the I2C client device. The probe error path removes this group when a later initialization step fails, but the normal remove path only removes w83791d_group. As a result, the optional fan/pwm 4-5 sysfs files can remain after the driver is unbound. The callbacks associated with these files access the driver data, which is devm allocated and released after driver unbind. Leaving the sysfs files behind can therefore result in accesses to stale driver data. Remove w83791d_group_fanpwm45 during normal teardown as well. This issue was found by manual code inspection.
References
- https://git.kernel.org/stable/c/081e3a78453635fb370b1712809d2af29e60b4c5
- https://git.kernel.org/stable/c/b1d419eb3bc41245c3d3d99dfe1a7b6c45989586
- https://git.kernel.org/stable/c/2ccf6c512290a288a2d4d7f076430dfb0c6ee476
- https://git.kernel.org/stable/c/f6e2ab72f32d16d71a2549c7ea062dd209f71670
- https://git.kernel.org/stable/c/2dd37d00f1f1af8e02ffa70ee573c10fd1a76864
- https://git.kernel.org/stable/c/2c381e6e0f033f2df13bd64905e7232c42f49009
- https://git.kernel.org/stable/c/583e04e88e75b8d57304015d83c38e82a9531600
- https://git.kernel.org/stable/c/0ff9c7775e51ac6d47b1bb5c46f06b1434fe58a8
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-93125
- GCVE · GCVE-0-2026-98197
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1374 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 6e1ecd9b8f1358ed4d099f0c54434240dc40debe < 081e3a78453635fb370b1712809d2af29e60b4c5 ; affected 6e1ecd9b8f1358ed4d099f0c54434240dc40debe < b1d419eb3bc41245c3d3d99dfe1a7b6c45989586 ; affected 6e1ecd9b8f1358ed4d099f0c54434240dc40debe < 2ccf6c512290a288a2d4d7f076430dfb0c6ee476 ; affected 6e1ecd9b8f1358ed4d099f0c54434240dc40debe < f6e2ab72f32d16d71a2549c7ea062dd209f71670 ; affected 6e1ecd9b8f1358ed4d099f0c54434240dc40debe < 2dd37d00f1f1af8e02ffa70ee573c10fd1a76864 ; affected 6e1ecd9b8f1358ed4d099f0c54434240dc40debe < 2c381e6e0f033f2df13bd64905e7232c42f49009 |
| Linux · Linux | affected 2.6.28 ; unaffected 0 < 2.6.28 ; unaffected 5.10.271 ≤ 5.10.* ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* |
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 |