Riskcovery

CVE-2026-43181

gpio: sysfs: fix chip removal with GPIOs exported over sysfs

State
Published
Severity
Not scored
Published
May 6, 2026
Updated
May 11, 2026
Reserved
May 1, 2026

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 1cd53df733c21ae0d344a2dec941a3e2a06fefd9 to before 54f463494eb5bf193ef7d904a493474c451734dfAffected
  • 1cd53df733c21ae0d344a2dec941a3e2a06fefd9 to before a645cc25904b0baf508b77a0402ce151212b9800Affected
  • 1cd53df733c21ae0d344a2dec941a3e2a06fefd9 to before 6766f59012301f1bf3f46c6e7149caca45d92309Affected
LinuxLinux
  • 6.17Affected
  • before 6.17Not affected
  • 6.18.16 through 6.18.*Not affected
  • 6.19.6 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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