Bug 2422681 (CVE-2025-68167)

Summary: CVE-2025-68167 kernel: gpiolib: fix invalid pointer access in debugfs
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-12-16 14:03:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

gpiolib: fix invalid pointer access in debugfs

If the memory allocation in gpiolib_seq_start() fails, the s->private
field remains uninitialized and is later dereferenced without checking
in gpiolib_seq_stop(). Initialize s->private to NULL before calling
kzalloc() and check it before dereferencing it.
Comment 1 Alexander B 2025-12-17 03:23:30 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025121627-CVE-2025-68167-a6eb@gregkh/T