CVE-2026-43181 (GCVE-0-2026-43181)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-05-06 11:27
VLAI?
Title
gpio: sysfs: fix chip removal with GPIOs exported over sysfs
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1cd53df733c21ae0d344a2dec941a3e2a06fefd9 , < 54f463494eb5bf193ef7d904a493474c451734df (git)
Affected: 1cd53df733c21ae0d344a2dec941a3e2a06fefd9 , < a645cc25904b0baf508b77a0402ce151212b9800 (git)
Affected: 1cd53df733c21ae0d344a2dec941a3e2a06fefd9 , < 6766f59012301f1bf3f46c6e7149caca45d92309 (git)
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    Linux Linux Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "drivers/gpio/gpiolib-sysfs.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: sysfs: fix chip removal with GPIOs exported over sysfs\n\nCurrently if we export a GPIO over sysfs and unbind the parent GPIO\ncontroller, the exported attribute will remain under /sys/class/gpio\nbecause once we remove the parent device, we can no longer associate the\ndescriptor with it in gpiod_unexport() and never drop the final\nreference.\n\nRework the teardown code: provide an unlocked variant of\ngpiod_unexport() and remove all exported GPIOs with the sysfs_lock taken\nbefore unregistering the parent device itself. This is done to prevent\nany new exports happening before we unregister the device completely."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-06T11:27:53.626Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "datePublished": "2026-05-06T11:27:53.626Z",
    "dateReserved": "2026-05-01T14:12:55.991Z",
    "dateUpdated": "2026-05-06T11:27:53.626Z",
    "state": "PUBLISHED"
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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