{"cve":"CVE-2026-98197","nvd":{"published":"2026-10-06T09:18:05.273","modified":"2026-10-19T10:18:20.170","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (w83791d) remove fan/pwm 4-5 sysfs group on remove\n\nWhen the fan/pwm 4-5 pins are not used as GPIO, w83791d_probe()\ncreates the w83791d_group_fanpwm45 sysfs group on the I2C client\ndevice.\n\nThe probe error path removes this group when a later initialization\nstep fails, but the normal remove path only removes w83791d_group.\nAs a result, the optional fan/pwm 4-5 sysfs files can remain after the\ndriver is unbound.\n\nThe callbacks associated with these files access the driver data,\nwhich is devm allocated and released after driver unbind. Leaving the\nsysfs files behind can therefore result in accesses to stale driver\ndata.\n\nRemove w83791d_group_fanpwm45 during normal teardown as well.\n\nThis issue was found by manual code inspection.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.0},"cwes":[],"references":["https://git.kernel.org/stable/c/081e3a78453635fb370b1712809d2af29e60b4c5","https://git.kernel.org/stable/c/0ff9c7775e51ac6d47b1bb5c46f06b1434fe58a8","https://git.kernel.org/stable/c/2c381e6e0f033f2df13bd64905e7232c42f49009","https://git.kernel.org/stable/c/2ccf6c512290a288a2d4d7f076430dfb0c6ee476","https://git.kernel.org/stable/c/2dd37d00f1f1af8e02ffa70ee573c10fd1a76864"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:57:46.668721662+00:00"},"epss":{"cve":"CVE-2026-98197","score":0.00122,"percentile":0.01934,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}