CVE-2026-64220

Description

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.

References

• https://git.kernel.org/stable/c/215c90ee656114f5e8c32408228d97082f8e0eef
• https://git.kernel.org/stable/c/34bf74b1fd2e4a44e27821a329204caf09df2976
• https://git.kernel.org/stable/c/371f53925a6714d0aa35f1aefdffc3e8cd62f480
• https://git.kernel.org/stable/c/3f1024deeab3b5443c29b3de4fe475e87309b8fa
• https://git.kernel.org/stable/c/508fd8ab158abd04b7f7d0f707cd6d6c405df4ea