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.
How to fix
- linux linux_kernel5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11 or later
- git.kernel.org/stable/c/215c90ee656114f5e8c32408228d97082f8e0eef
- git.kernel.org/stable/c/34bf74b1fd2e4a44e27821a329204caf09df2976
- git.kernel.org/stable/c/371f53925a6714d0aa35f1aefdffc3e8cd62f480
- git.kernel.org/stable/c/3f1024deeab3b5443c29b3de4fe475e87309b8fa
- git.kernel.org/stable/c/508fd8ab158abd04b7f7d0f707cd6d6c405df4ea
- git.kernel.org/stable/c/f0e211d6539fae800217c10797993b7592d6ab01
- git.kernel.org/stable/c/f59e686c778cb41b8f7aa8fab2afd6a01afb3d47
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.11 ≤ v < 5.15.209, 5.16 ≤ v < 6.1.175, 6.2 ≤ v < 6.6.142, 6.7 ≤ v < 6.12.92, 6.13 ≤ v < 6.18.34, 6.19 ≤ v < 7.0.11, 7.1 | 5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11 |
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