hwmon: (w83791d) remove fan/pwm 4-5 sysfs group on remove
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.
CVE-2026-98197
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98197
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6e1ecd9b8f1358ed4d099f0c54434240dc40debe",
"lessThan": "081e3a78453635fb370b1712809d2af29e60b4c5",
"versionType": "git"
},
{
"status": "affected",
"version": "6e1ecd9b8f1358ed4d099f0c54434240dc40debe",
"lessThan": "b1d419eb3bc41245c3d3d99dfe1a7b6c45989586",
"versionType": "git"
},
{
"status": "affected",
"version": "6e1ecd9b8f1358ed4d099f0c54434240dc40debe",
"lessThan": "2ccf6c512290a288a2d4d7f076430dfb0c6ee476",
"versionType": "git"
},
{
"status": "affected",
"version": "6e1ecd9b8f1358ed4d099f0c54434240dc40debe",
"lessThan": "f6e2ab72f32d16d71a2549c7ea062dd209f71670",
"versionType": "git"
},
{
"status": "affected",
"version": "6e1ecd9b8f1358ed4d099f0c54434240dc40debe",
"lessThan": "2dd37d00f1f1af8e02ffa70ee573c10fd1a76864",
"versionType": "git"
},
{
"status": "affected",
"version": "6e1ecd9b8f1358ed4d099f0c54434240dc40debe",
"lessThan": "2c381e6e0f033f2df13bd64905e7232c42f49009",
"versionType": "git"
},
{
"status": "affected",
"version": "6e1ecd9b8f1358ed4d099f0c54434240dc40debe",
"lessThan": "583e04e88e75b8d57304015d83c38e82a9531600",
"versionType": "git"
},
{
"status": "affected",
"version": "6e1ecd9b8f1358ed4d099f0c54434240dc40debe",
"lessThan": "0ff9c7775e51ac6d47b1bb5c46f06b1434fe58a8",
"versionType": "git"
}
],
"programFiles": [
"drivers/hwmon/w83791d.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.28"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.28",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/hwmon/w83791d.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98197
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #38278 · Revision 1
- Added to Heist Feed
- Publisher date