Bug 2424878 (CVE-2025-68354)

Summary: CVE-2025-68354 kernel: regulator: core: Protect regulator_supply_alias_list with regulator_list_mutex
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 2025-12-24 11:03:13 UTC 
In the Linux kernel, the following vulnerability has been resolved:

regulator: core: Protect regulator_supply_alias_list with regulator_list_mutex

regulator_supply_alias_list was accessed without any locking in
regulator_supply_alias(), regulator_register_supply_alias(), and
regulator_unregister_supply_alias(). Concurrent registration,
unregistration and lookups can race, leading to:

1 use-after-free if an alias entry is removed while being read,
2 duplicate entries when two threads register the same alias,
3 inconsistent alias mappings observed by consumers.

Protect all traversals, insertions and deletions on
regulator_supply_alias_list with the existing regulator_list_mutex.
Comment 1 Alexander B 2025-12-25 15:52:58 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122455-CVE-2025-68354-d175@gregkh/T