CVE-2026-64220
device property: set fwnode->secondary to NULL in fwnode_init()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.11
References 7
git.kernel.org
- stable/c/f0e211d6539fae800217c10797993b7592d6ab01
- stable/c/3f1024deeab3b5443c29b3de4fe475e87309b8fa
- stable/c/371f53925a6714d0aa35f1aefdffc3e8cd62f480
- stable/c/34bf74b1fd2e4a44e27821a329204caf09df2976
- stable/c/508fd8ab158abd04b7f7d0f707cd6d6c405df4ea
- stable/c/f59e686c778cb41b8f7aa8fab2afd6a01afb3d47
- stable/c/215c90ee656114f5e8c32408228d97082f8e0eef