Bug 2397560 (CVE-2025-39882)

Summary: CVE-2025-39882 kernel: drm/mediatek: fix potential OF node use-after-free
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-09-23 07:01:43 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/mediatek: fix potential OF node use-after-free

The for_each_child_of_node() helper drops the reference it takes to each
node as it iterates over children and an explicit of_node_put() is only
needed when exiting the loop early.

Drop the recently introduced bogus additional reference count decrement
at each iteration that could potentially lead to a use-after-free.
Comment 1 Jon Moroney 2025-09-23 17:26:23 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025092301-CVE-2025-39882-1d0a@gregkh/T