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Si no se restablece coupled_desc.n_coupled tras liberar coupled_rdevs, se puede producir una desreferencia de punteros nulos al acceder a los reguladores despu\u00e9s de la desvinculaci\u00f3n. Esto puede ocurrir durante la gesti\u00f3n de proyectos en tiempo de ejecuci\u00f3n u otras operaciones del regulador que dependen de metadatos de acoplamiento. Por ejemplo, en ridesx4, desvincular el dispositivo de plataforma 'reg-dummy' activa un p\u00e1nico en regulator_lock_recursive() debido a un estado de acoplamiento obsoleto. Aseg\u00farese de que n_coupled est\u00e9 establecido en 0 para evitar el acceso a punteros no v\u00e1lidos."}], "id": "CVE-2025-38668", "lastModified": "2026-01-08T22:30:50.987", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-08-22T16:15:42.283", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/233d3c54c9620e95193923859ea1d0b0f5d748ca"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5d4261dbb3335221fd9c6e69f909ba79ee6663a7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6c49eac796681e250e34156bafb643930310bd4a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7574892e259bbb16262ebfb4b65a2054a5e03a49"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/800a2cfb2df7f96b3fb48910fc595e0215f6b019"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ca46946a482238b0cdea459fb82fc837fb36260e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ca9bef9ba1a6be640c87bf802d2e9e696021576a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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{"created": "2025-08-23T10:55:32.837138+00:00", "updated": "2025-08-23T10:55:32.837188+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}