NULL Pointer Dereference in Linux Kernel Regulator Component
CVE-2025-38668
What is CVE-2025-38668?
A vulnerability in the Linux kernel's regulator component can cause a NULL pointer dereference due to unhandled coupling metadata. This occurs when the coupling_desc.n_coupled is not reset post-unbind, leading to potential system panics during operations that involve regulators. For instance, in scenarios involving runtime power management, a failure to manage the coupling state correctly can trigger critical errors, impacting system stability and reliability. Developers and system administrators should ensure that n_coupled is properly reset to mitigate access to invalid pointers.
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Affected Version(s)
Linux d8ca7d184b33af7913c244900df77c6cad6a5590 < 7574892e259bbb16262ebfb4b65a2054a5e03a49
Linux d8ca7d184b33af7913c244900df77c6cad6a5590 < 6c49eac796681e250e34156bafb643930310bd4a
Linux d8ca7d184b33af7913c244900df77c6cad6a5590