CVE-2025-38668
regulator: core: fix NULL dereference on unbind due to stale coupling data
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 22, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
d8ca7d184b33af7913c244900df77c6cad6a5590 < 7574892e259bbb16262ebfb4b65a2054a5e03a49 d8ca7d184b33af7913c244900df77c6cad6a5590 < 6c49eac796681e250e34156bafb643930310bd4a d8ca7d184b33af7913c244900df77c6cad6a5590 < ca9bef9ba1a6be640c87bf802d2e9e696021576a d8ca7d184b33af7913c244900df77c6cad6a5590 < 800a2cfb2df7f96b3fb48910fc595e0215f6b019 d8ca7d184b33af7913c244900df77c6cad6a5590 < 233d3c54c9620e95193923859ea1d0b0f5d748ca d8ca7d184b33af7913c244900df77c6cad6a5590 < 5d4261dbb3335221fd9c6e69f909ba79ee6663a7 d8ca7d184b33af7913c244900df77c6cad6a5590 < d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8 d8ca7d184b33af7913c244900df77c6cad6a5590 < ca46946a482238b0cdea459fb82fc837fb36260e
Linux / Linux
5.3
References
git.kernel.org: https://git.kernel.org/stable/c/7574892e259bbb16262ebfb4b65a2054a5e03a49 git.kernel.org: https://git.kernel.org/stable/c/6c49eac796681e250e34156bafb643930310bd4a git.kernel.org: https://git.kernel.org/stable/c/ca9bef9ba1a6be640c87bf802d2e9e696021576a git.kernel.org: https://git.kernel.org/stable/c/800a2cfb2df7f96b3fb48910fc595e0215f6b019 git.kernel.org: https://git.kernel.org/stable/c/233d3c54c9620e95193923859ea1d0b0f5d748ca git.kernel.org: https://git.kernel.org/stable/c/5d4261dbb3335221fd9c6e69f909ba79ee6663a7 git.kernel.org: https://git.kernel.org/stable/c/d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8 git.kernel.org: https://git.kernel.org/stable/c/ca46946a482238b0cdea459fb82fc837fb36260e lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html