5.5

CVE-2025-38668

regulator: core: fix NULL dereference on unbind due to stale coupling data

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.3 < 5.4.297
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.241
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.190
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.148
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.101
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.41
Linux ≫ Linux Kernel Version >= 6.13 < 6.15.9
Linux ≫ Linux Kernel Version6.16 Updaterc1
Linux ≫ Linux Kernel Version6.16 Updaterc2
Linux ≫ Linux Kernel Version6.16 Updaterc3
Linux ≫ Linux Kernel Version6.16 Updaterc4
Debian ≫ Debian Linux Version11.0
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.044
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/800a2cfb2df7f96b3fb48910fc595e0215f6b019
Patch
https://git.kernel.org/stable/c/233d3c54c9620e95193923859ea1d0b0f5d748ca
Patch
https://git.kernel.org/stable/c/5d4261dbb3335221fd9c6e69f909ba79ee6663a7
Patch
https://git.kernel.org/stable/c/d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8
Patch
https://git.kernel.org/stable/c/ca46946a482238b0cdea459fb82fc837fb36260e
Patch
https://git.kernel.org/stable/c/6c49eac796681e250e34156bafb643930310bd4a
Patch
https://git.kernel.org/stable/c/7574892e259bbb16262ebfb4b65a2054a5e03a49
Patch
https://git.kernel.org/stable/c/ca9bef9ba1a6be640c87bf802d2e9e696021576a
Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Third Party Advisory