CVE-2026-64220
Full vulnerability record from the local CVENow database.
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.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-07-24 16:16:49.797000
Last modified
2026-11-06 17:18:41.423000
View original CVE JSON
{
"id": "CVE-2026-64220",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-07-24T16:16:49.797",
"lastModified": "2026-11-06T17:18:41.423",
"vulnStatus": "Analyzed",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndevice property: set fwnode->secondary to NULL in fwnode_init()\n\nIf a firmware node is allocated on the stack (for instance: temporary\nsoftware node whose life-time we control) or on the heap - but using a\nnon-zeroing allocation function - and initialized using fwnode_init(),\nits secondary pointer will contain uninitalized memory which likely will\nbe neither NULL nor IS_ERR() and so may end up being dereferenced (for\nexample: in dev_to_swnode()). Set fwnode->secondary to NULL on\ninitialization."
}
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