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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
6e1ecd9b8f1358ed4d099f0c54434240dc40debe to < 081e3a78453635fb370b1712809d2af29e60b4c5affected6e1ecd9b8f1358ed4d099f0c54434240dc40debe to < b1d419eb3bc41245c3d3d99dfe1a7b6c45989586affected6e1ecd9b8f1358ed4d099f0c54434240dc40debe to < 2ccf6c512290a288a2d4d7f076430dfb0c6ee476affected6e1ecd9b8f1358ed4d099f0c54434240dc40debe to < f6e2ab72f32d16d71a2549c7ea062dd209f71670affected6e1ecd9b8f1358ed4d099f0c54434240dc40debe to < 2dd37d00f1f1af8e02ffa70ee573c10fd1a76864affected6e1ecd9b8f1358ed4d099f0c54434240dc40debe to < 2c381e6e0f033f2df13bd64905e7232c42f49009affected6e1ecd9b8f1358ed4d099f0c54434240dc40debe to < 583e04e88e75b8d57304015d83c38e82a9531600affected6e1ecd9b8f1358ed4d099f0c54434240dc40debe to < 0ff9c7775e51ac6d47b1bb5c46f06b1434fe58a8affected
Linux Linux
Default version status: affected
2.6.28affected0 to < 2.6.28unaffected5.10.271 to ≤ 5.10.*unaffected5.15.222 to ≤ 5.15.*unaffected6.1.189 to ≤ 6.1.*unaffected6.6.158 to ≤ 6.6.*unaffected6.12.112 to ≤ 6.12.*unaffected6.18.54 to ≤ 6.18.*unaffected7.2.8 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
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 ↗