CVE-2026-64220
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-908
- Record status
- Analyzed
Affected
- Linux Kernel < 5.15.209
- Linux Kernel < 6.1.175
- Linux Kernel < 6.6.142
- Linux Kernel < 6.12.92
- Linux Kernel < 6.18.34
- Linux Kernel < 7.0.11
- Linux Kernel 7.1
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-64220.md and follow it. Check whether this project is affected by CVE-2026-64220. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- 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
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