CVE-2026-64220

About vulnerability

In the Linux kernel, the following vulnerability has been resolved:

device property: set fwnode->secondary to NULL in fwnode_init()

If a firmware node is allocated on the stack (for instance: temporary software node whose life-time we control) or on the heap - but using a non-zeroing allocation function - and initialized using fwnode_init(), its secondary pointer will contain uninitalized memory which likely will be neither NULL nor IS_ERR() and so may end up being dereferenced (for example: in dev_to_swnode()). Set fwnode->secondary to NULL on initialization.

Affected product:

AlmaLinux 9.2 ESU , TuxCare 9.6 ESU , Ubuntu 20.04 ELS

Affected packages:

kernel @ 5.14.0 (+2 more)

Live-patch status from KernelCare for each operating system.