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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.11, < 5.15.209 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/215c90ee656114f5e8c32408228d97082f8e0eefPatch
- https://git.kernel.org/stable/c/34bf74b1fd2e4a44e27821a329204caf09df2976Patch
- https://git.kernel.org/stable/c/371f53925a6714d0aa35f1aefdffc3e8cd62f480Patch
- https://git.kernel.org/stable/c/3f1024deeab3b5443c29b3de4fe475e87309b8faPatch
- https://git.kernel.org/stable/c/508fd8ab158abd04b7f7d0f707cd6d6c405df4eaPatch
- https://git.kernel.org/stable/c/f0e211d6539fae800217c10797993b7592d6ab01Patch
- https://git.kernel.org/stable/c/f59e686c778cb41b8f7aa8fab2afd6a01afb3d47Patch
FAQ
What is CVE-2026-64220?
CVE-2026-64220 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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: tempor...
How severe is CVE-2026-64220?
CVE-2026-64220 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-64220?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.