CVE-2025-38668
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
regulator: core: fix NULL dereference on unbind due to stale coupling data
Failing to reset coupling_desc.n_coupled after freeing coupled_rdevs can lead to NULL pointer dereference when regulators are accessed post-unbind.
This can happen during runtime PM or other regulator operations that rely on coupling metadata.
For example, on ridesx4, unbinding the 'reg-dummy' platform device triggers a panic in regulator_lock_recursive() due to stale coupling state.
Ensure n_coupled is set to 0 to prevent access to invalid pointers.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.16%
- Percentil entre todas las CVEs puntuadas: 5
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)
CWE
- CWE-476
Referencias
- https://git.kernel.org/stable/c/233d3c54c9620e95193923859ea1d0b0f5d748ca
- https://git.kernel.org/stable/c/5d4261dbb3335221fd9c6e69f909ba79ee6663a7
- https://git.kernel.org/stable/c/6c49eac796681e250e34156bafb643930310bd4a
- https://git.kernel.org/stable/c/7574892e259bbb16262ebfb4b65a2054a5e03a49
- https://git.kernel.org/stable/c/800a2cfb2df7f96b3fb48910fc595e0215f6b019
- https://git.kernel.org/stable/c/ca46946a482238b0cdea459fb82fc837fb36260e
- https://git.kernel.org/stable/c/ca9bef9ba1a6be640c87bf802d2e9e696021576a
- https://git.kernel.org/stable/c/d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nregulator: core: fix NULL dereference on unbind due to stale coupling data\n\nFailing to reset coupling_desc.n_coupled after freeing coupled_rdevs can\nlead to NULL pointer dereference when regulators are accessed post-unbind.\n\nThis can happen during runtime PM or other regulator operations that rely\non coupling metadata.\n\nFor example, on ridesx4, unbinding the 'reg-dummy' platform device triggers\na panic in regulator_lock_recursive() due to stale coupling state.\n\nEnsure n_coupled is set to 0 to prevent access to invalid pointers."
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