Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: gpio: sysfs: fix chip removal with GPIOs exported over sysfs Currently if we export a GPIO over sysfs and unbind the parent GPIO controller, the exported attribute will remain under /sys/class/gpio because once we remove the parent device, we can no longer associate the descriptor with it in gpiod_unexport() and never drop the final reference. Rework the teardown code: provide an unlocked variant of gpiod_unexport() and remove all exported GPIOs with the sysfs_lock taken before unregistering the parent device itself. This is done to prevent any new exports happening before we unregister the device completely.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1cd53df733c21ae0d344a2dec941a3e2a06fefd9 before 54f463494eb5bf193ef7d904a493474c451734df; affected 1cd53df733c21ae0d344a2dec941a3e2a06fefd9 before a645cc25904b0baf508b77a0402ce151212b9800; affected 1cd53df733c21ae0d344a2dec941a3e2a06fefd9 before 6766f59012301f1bf3f46c6e7149caca45d92309 |
| Linux / Linux | affected 6.17; unaffected 0 before 6.17; unaffected 6.18.16 through 6.18.*; unaffected 6.19.6 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.