CVE-2026-43181

{"id": "CVE-2026-43181", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1cd53df733c21ae0d344a2dec941a3e2a06fefd9", "lessThan": "54f463494eb5bf193ef7d904a493474c451734df", "versionType": "git"}, {"status": "affected", "version": "1cd53df733c21ae0d344a2dec941a3e2a06fefd9", "lessThan": "a645cc25904b0baf508b77a0402ce151212b9800", "versionType": "git"}, {"status": "affected", "version": "1cd53df733c21ae0d344a2dec941a3e2a06fefd9", "lessThan": "6766f59012301f1bf3f46c6e7149caca45d92309", "versionType": "git"}], "programFiles": ["drivers/gpio/gpiolib-sysfs.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"status": "unaffected", "version": "0", "lessThan": "6.17", "versionType": "semver"}, {"status": "unaffected", "version": "6.18.16", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.6", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpio/gpiolib-sysfs.c"], "defaultStatus": "affected"}]}], "published": "2026-05-06T12:16:36.670", "references": [{"url": "https://git.kernel.org/stable/c/54f463494eb5bf193ef7d904a493474c451734df", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6766f59012301f1bf3f46c6e7149caca45d92309", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a645cc25904b0baf508b77a0402ce151212b9800", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "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."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ngpio: sysfs: corregir la eliminaci\u00f3n del chip con GPIOs exportados a trav\u00e9s de sysfs\n\nActualmente, si exportamos un GPIO a trav\u00e9s de sysfs y desvinculamos el controlador GPIO padre, el atributo exportado permanecer\u00e1 bajo /sys/class/gpio porque una vez que eliminamos el dispositivo padre, ya no podemos asociar el descriptor con \u00e9l en gpiod_unexport() y nunca se elimina la referencia final.\n\nReestructurar el c\u00f3digo de desmontaje: proporcionar una variante desbloqueada de gpiod_unexport() y eliminar todos los GPIOs exportados con el sysfs_lock tomado antes de desregistrar el propio dispositivo padre. Esto se hace para evitar que ocurran nuevas exportaciones antes de que desregistremos el dispositivo por completo."}], "lastModified": "2026-11-11T20:10:00.273", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "742E05BA-773A-4EF3-822F-A4A7DED31A65", "versionEndExcluding": "6.18.16", "versionStartIncluding": "6.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67", "versionEndExcluding": "6.19.6", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}