CVE-2025-38668
regulator: core: fix NULL dereference on unbind due to stale coupling data
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.3
References 8
git.kernel.org
- stable/c/7574892e259bbb16262ebfb4b65a2054a5e03a49
- stable/c/6c49eac796681e250e34156bafb643930310bd4a
- stable/c/ca9bef9ba1a6be640c87bf802d2e9e696021576a
- stable/c/800a2cfb2df7f96b3fb48910fc595e0215f6b019
- stable/c/233d3c54c9620e95193923859ea1d0b0f5d748ca
- stable/c/5d4261dbb3335221fd9c6e69f909ba79ee6663a7
- stable/c/d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8
- stable/c/ca46946a482238b0cdea459fb82fc837fb36260e