CVE-2026-64220

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < f0e211d6539fae800217c10797993b7592d6ab01affected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < 3f1024deeab3b5443c29b3de4fe475e87309b8faaffected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < 371f53925a6714d0aa35f1aefdffc3e8cd62f480affected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < 34bf74b1fd2e4a44e27821a329204caf09df2976affected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < 508fd8ab158abd04b7f7d0f707cd6d6c405df4eaaffected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < f59e686c778cb41b8f7aa8fab2afd6a01afb3d47affected
LinuxLinux01bb86b380a306bd937c96da36f66429f3362137 < 215c90ee656114f5e8c32408228d97082f8e0eefaffected
LinuxLinux5.11affected
LinuxLinux0 < 5.11unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.142 <= 6.6.*unaffected
LinuxLinux6.12.92 <= 6.12.*unaffected
LinuxLinux6.18.34 <= 6.18.*unaffected
LinuxLinux7.0.11 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References