CVE-2026-64220

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 v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/215c90ee656114f5e8c32408228d97082f8e0eef	Patch
https://git.kernel.org/stable/c/34bf74b1fd2e4a44e27821a329204caf09df2976	Patch
https://git.kernel.org/stable/c/371f53925a6714d0aa35f1aefdffc3e8cd62f480	Patch
https://git.kernel.org/stable/c/3f1024deeab3b5443c29b3de4fe475e87309b8fa	Patch
https://git.kernel.org/stable/c/508fd8ab158abd04b7f7d0f707cd6d6c405df4ea	Patch
https://git.kernel.org/stable/c/f0e211d6539fae800217c10797993b7592d6ab01	Patch
https://git.kernel.org/stable/c/f59e686c778cb41b8f7aa8fab2afd6a01afb3d47	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc4::::::

History

No history.

Information

Published : 2026-07-24 16:16

Updated : 2026-08-11 18:25

NVD link : CVE-2026-64220

Mitre link : CVE-2026-64220

CVE.ORG link : CVE-2026-64220

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-908

Use of Uninitialized Resource

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