PT-2026-64335 · Linux · Linux

CVE-2026-64220 · Published 2026-07-24 · Updated 2026-07-24

Mitre

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.

Related Identifiers

CVE-2026-64220

Affected Products

Linux

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-64220 · Security Note
• https://git.kernel.org/stable/c/508fd8ab158abd04b7f7d0f707cd6d6c405df4ea · Note
• https://git.kernel.org/stable/c/f59e686c778cb41b8f7aa8fab2afd6a01afb3d47 · Note
• https://git.kernel.org/stable/c/371f53925a6714d0aa35f1aefdffc3e8cd62f480 · Note
• https://git.kernel.org/stable/c/3f1024deeab3b5443c29b3de4fe475e87309b8fa · Note
• https://git.kernel.org/stable/c/f0e211d6539fae800217c10797993b7592d6ab01 · Note
• https://git.kernel.org/stable/c/215c90ee656114f5e8c32408228d97082f8e0eef · Note
• https://git.kernel.org/stable/c/34bf74b1fd2e4a44e27821a329204caf09df2976 · Note