Answer in brief
CVE-2026-64220 records a Medium severity (CVSS 5.5) vulnerability in device property: set fwnode->secondary to NULL in fwnode_init(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=01bb86b380a306bd937c96da36f66429f3362137 <f0e211d6539fae800217c10797993b7592d6ab01 || >=01bb86b380a306bd937c96da36f66429f3362137 <3f1024deeab3b5443c29b3de4fe475e87309b8fa || >=01bb86b380a306bd937c96da36f66429f3362137 <371f53925a6714d0aa35f1aefdffc3e8cd62f480 || >=01bb86b380a306bd937c96da36f66429f3362137 <34bf74b1fd2e4a44e27821a329204caf09df2976 || >=01bb86b380a306bd937c96da36f66429f3362137 <508fd8ab158abd04b7f7d0f707cd6d6c405df4ea || >=01bb86b380a306bd937c96da36f66429f3362137 <f59e686c778cb41b8f7aa8fab2afd6a01afb3d47 || >=01bb86b380a306bd937c96da36f66429f3362137 <215c90ee656114f5e8c32408228d97082f8e0eef | f0e211d6539fae800217c10797993b7592d6ab01, 3f1024deeab3b5443c29b3de4fe475e87309b8fa, 371f53925a6714d0aa35f1aefdffc3e8cd62f480, 34bf74b1fd2e4a44e27821a329204caf09df2976, 508fd8ab158abd04b7f7d0f707cd6d6c405df4ea, f59e686c778cb41b8f7aa8fab2afd6a01afb3d47, 215c90ee656114f5e8c32408228d97082f8e0eef |
| Linux/Linuxgeneric | 5.11 | Not reported |
Published upstream
Jul 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 12, 2026
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.
Quoted source text, attributed separately from HOL analysis.