CVE-2025-38668
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…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.3 before 5.4.297 from 5.5 before 5.10.241 from 5.11 before 5.15.190 from 5.16 before 6.1.148 from 6.2 before 6.6.101 from 6.7 before 6.12.41 |
| Debian | Debian Linux | Version 11.0 |
Weakness classification
References
- NVD record
- CVE.org record
- 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