Description
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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
d8ca7d184b33af7913c244900df77c6cad6a5590 to < 7574892e259bbb16262ebfb4b65a2054a5e03a49affectedd8ca7d184b33af7913c244900df77c6cad6a5590 to < 6c49eac796681e250e34156bafb643930310bd4aaffectedd8ca7d184b33af7913c244900df77c6cad6a5590 to < ca9bef9ba1a6be640c87bf802d2e9e696021576aaffectedd8ca7d184b33af7913c244900df77c6cad6a5590 to < 800a2cfb2df7f96b3fb48910fc595e0215f6b019affectedd8ca7d184b33af7913c244900df77c6cad6a5590 to < 233d3c54c9620e95193923859ea1d0b0f5d748caaffectedd8ca7d184b33af7913c244900df77c6cad6a5590 to < 5d4261dbb3335221fd9c6e69f909ba79ee6663a7affectedd8ca7d184b33af7913c244900df77c6cad6a5590 to < d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8affectedd8ca7d184b33af7913c244900df77c6cad6a5590 to < ca46946a482238b0cdea459fb82fc837fb36260eaffected
Linux Linux
Default version status: affected
5.3affected0 to < 5.3unaffected5.4.297 to ≤ 5.4.*unaffected5.10.241 to ≤ 5.10.*unaffected5.15.190 to ≤ 5.15.*unaffected6.1.148 to ≤ 6.1.*unaffected6.6.101 to ≤ 6.6.*unaffected6.12.41 to ≤ 6.12.*unaffected6.15.9 to ≤ 6.15.*unaffected6.16 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/7574892e259bbb16262ebfb4b65a2054a5e03a49 ↗
- https://git.kernel.org/stable/c/6c49eac796681e250e34156bafb643930310bd4a ↗
- https://git.kernel.org/stable/c/ca9bef9ba1a6be640c87bf802d2e9e696021576a ↗
- https://git.kernel.org/stable/c/800a2cfb2df7f96b3fb48910fc595e0215f6b019 ↗
- https://git.kernel.org/stable/c/233d3c54c9620e95193923859ea1d0b0f5d748ca ↗
- https://git.kernel.org/stable/c/5d4261dbb3335221fd9c6e69f909ba79ee6663a7 ↗
- https://git.kernel.org/stable/c/d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8 ↗
- https://git.kernel.org/stable/c/ca46946a482238b0cdea459fb82fc837fb36260e ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗