CVE-2026-43340

{"id": "CVE-2026-43340", "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": "ed9eccbe8970f6eedc1b978c157caf1251a896d4", "lessThan": "3181c34b415c5464be9d34bff3e43ef63b747039", "versionType": "git"}, {"status": "affected", "version": "ed9eccbe8970f6eedc1b978c157caf1251a896d4", "lessThan": "2b1f49e4fdff3ef0f8e9158bbb5b149e06287560", "versionType": "git"}, {"status": "affected", "version": "ed9eccbe8970f6eedc1b978c157caf1251a896d4", "lessThan": "4d5ffe524903a30e2e0da7d16841a56bec2de55c", "versionType": "git"}, {"status": "affected", "version": "ed9eccbe8970f6eedc1b978c157caf1251a896d4", "lessThan": "c01bcc67a9a692d65508ebd480405b5e77d562b7", "versionType": "git"}, {"status": "affected", "version": "ed9eccbe8970f6eedc1b978c157caf1251a896d4", "lessThan": "430291d8f3884f57ae0057049b0ca291453e29e1", "versionType": "git"}, {"status": "affected", "version": "ed9eccbe8970f6eedc1b978c157caf1251a896d4", "lessThan": "b89c026227712c367950bbae055a5b31073d3b30", "versionType": "git"}, {"status": "affected", "version": "ed9eccbe8970f6eedc1b978c157caf1251a896d4", "lessThan": "83134a7a176ce5b4b19b6edecf4360e8d98d1a5a", "versionType": "git"}, {"status": "affected", "version": "ed9eccbe8970f6eedc1b978c157caf1251a896d4", "lessThan": "4b9a9a6d71e3e252032f959fb3895a33acb5865c", "versionType": "git"}], "programFiles": ["drivers/comedi/drivers.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.29"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.29", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.253", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.203", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.168", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.134", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.81", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.22", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.12", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/comedi/drivers.c"], "defaultStatus": "affected"}]}], "published": "2026-05-08T14:16:43.910", "references": [{"url": "https://git.kernel.org/stable/c/2b1f49e4fdff3ef0f8e9158bbb5b149e06287560", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3181c34b415c5464be9d34bff3e43ef63b747039", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/430291d8f3884f57ae0057049b0ca291453e29e1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4b9a9a6d71e3e252032f959fb3895a33acb5865c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4d5ffe524903a30e2e0da7d16841a56bec2de55c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/83134a7a176ce5b4b19b6edecf4360e8d98d1a5a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b89c026227712c367950bbae055a5b31073d3b30", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c01bcc67a9a692d65508ebd480405b5e77d562b7", "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\ncomedi: Reinit dev->spinlock between attachments to low-level drivers\n\n`struct comedi_device` is the main controlling structure for a COMEDI\ndevice created by the COMEDI subsystem. It contains a member `spinlock`\ncontaining a spin-lock that is initialized by the COMEDI subsystem, but\nis reserved for use by a low-level driver attached to the COMEDI device\n(at least since commit 25436dc9d84f (\"Staging: comedi: remove RT\ncode\")).\n\nSome COMEDI devices (those created on initialization of the COMEDI\nsubsystem when the \"comedi.comedi_num_legacy_minors\" parameter is\nnon-zero) can be attached to different low-level drivers over their\nlifetime using the `COMEDI_DEVCONFIG` ioctl command. This can result in\ninconsistent lock states being reported when there is a mismatch in the\nspin-lock locking levels used by each low-level driver to which the\nCOMEDI device has been attached. Fix it by reinitializing\n`dev->spinlock` before calling the low-level driver's `attach` function\npointer if `CONFIG_LOCKDEP` is enabled."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncomedi: Reinicializar \u2019dev -> spinlock\u2019 entre adjuntos a controladores de bajo nivel\n\n\u2019struct comedi_device\u2019 es la estructura de control principal para un dispositivo COMEDI creado por el subsistema COMEDI. Contiene un miembro \u2019spinlock\u2019 que contiene un spin-lock que es inicializado por el subsistema COMEDI, pero est\u00e1 reservado para uso por un controlador de bajo nivel adjunto al dispositivo COMEDI (al menos desde el commit 25436dc9d84f (\u2019Staging: comedi: remove RT code\u2019)).\n\nAlgunos dispositivos COMEDI (aquellos creados en la inicializaci\u00f3n del subsistema COMEDI cuando el par\u00e1metro \u2019comedi.comedi_num_legacy_minors\u2019 no es cero) pueden ser adjuntados a diferentes controladores de bajo nivel durante su vida \u00fatil usando el comando ioctl \u2019COMEDI_DEVCONFIG\u2019. Esto puede resultar en que se reporten estados de bloqueo inconsistentes cuando hay un desajuste en los niveles de bloqueo del spin-lock utilizados por cada controlador de bajo nivel al que se ha adjuntado el dispositivo COMEDI. Solucionarlo reinicializando \u2019dev -> spinlock\u2019 antes de llamar al puntero de funci\u00f3n \u2019attach\u2019 del controlador de bajo nivel si \u2019CONFIG_LOCKDEP\u2019 est\u00e1 habilitado."}], "lastModified": "2026-11-11T20:10:00.273", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0C1B1C38-DBED-4FC4-AE7D-B0A2622E224F", "versionEndExcluding": "5.10.253", "versionStartIncluding": "2.6.29"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "20DDB3E9-AABF-4107-ADB0-5362AA067045", "versionEndExcluding": "5.15.203", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2DDDCA1-6DAB-4018-B920-8F045DDD8D3B", "versionEndExcluding": "6.1.168", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F56F925B-BAF8-4F4B-B62F-1496AF19A307", "versionEndExcluding": "6.6.134", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6EF80433-B33B-43C5-8E64-0FA7B8DCE1BC", "versionEndExcluding": "6.12.81", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C9DF8BCE-36D3-475D-9D21-19E4F02F9029", "versionEndExcluding": "6.18.22", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0A2B9540-02D5-41B4-B16A-82AF66FD4F36", "versionEndExcluding": "6.19.12", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}