CVE-2026-64220
Vulnerability 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.
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.
Vulnerability Details
Published Date
Last Modified
Source
NVD
Vendor
Linux
Product
Linux
External 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
- https://git.kernel.org/stable/c/f0e211d6539fae800217c10797993b7592d6ab01
- https://git.kernel.org/stable/c/f59e686c778cb41b8f7aa8fab2afd6a01afb3d47
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