CVE-2026-23129None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: dpll: Prevent duplicate registrations Modify the internal registration helpers dpll_xa_ref_{dpll,pin}_add() to reject duplicate registration attempts. Previously, if …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
dpll: Prevent duplicate registrations
Modify the internal registration helpers dpll_xa_ref_{dpll,pin}_add() to reject duplicate registration attempts.
Previously, if a caller attempted to register the same pin multiple times (with the same ops, priv, and cookie) on the same device, the core silently increments the reference count and return success. This behavior is incorrect because if the caller makes these duplicate registrations then for the first one dpll_pin_registration is allocated and for others the associated dpll_pin_ref.refcount is incremented. During the first unregistration the associated dpll_pin_registration is freed and for others WARN is fired.
Fix this by updating the logic to return -EEXIST if a matching
registration is found to enforce a strict "register once" policy.
Linux >= 9431063ad323ac864750aeba4d304389bc42ca4e < dfec0501dba8f4711ef142a6a890e4812b7af88cLinux >= 9431063ad323ac864750aeba4d304389bc42ca4e < 236a657422a564859dcd0db7bdb486abb21a721aLinux >= 9431063ad323ac864750aeba4d304389bc42ca4e < f3ddbaaaaf4d0633b40482f471753f9c71294a4aLinux 6.7Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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