Answer in brief
CVE-2026-74585 records a Unknown severity vulnerability in thunderbolt: Bound the DROM dual link port number before indexing sw->ports. 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.
A CVSS score is not reported in the current record. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c || >=cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <3d3c212b70633332ab71672aa2bc6af257d2ec83 || >=cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <b98e1e28bd95b0fa33164eec1e763d26c7058b39 || >=cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <50f0c8dd8c3390f851cfb97ca13116f9ee6469d1 || >=cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <f28066057134aa9294caa597b670daf505ad9dce || >=cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <40d2ffb74094cf36edbe05855566a4c58b6ce808 || >=cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <f32c3a9a77cfb50934a60b05d5407649af062535 || >=cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <d6764992f17b23d91ff93ce905ab53c2aa7191f0 | 6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c, 3d3c212b70633332ab71672aa2bc6af257d2ec83, b98e1e28bd95b0fa33164eec1e763d26c7058b39, 50f0c8dd8c3390f851cfb97ca13116f9ee6469d1, f28066057134aa9294caa597b670daf505ad9dce, 40d2ffb74094cf36edbe05855566a4c58b6ce808, f32c3a9a77cfb50934a60b05d5407649af062535, d6764992f17b23d91ff93ce905ab53c2aa7191f0 |
| Linux/Linuxgeneric | 3.17 | Not reported |
Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 22, 2026
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Bound the DROM dual link port number before indexing sw->ports tb_drom_parse_entry_port() validates the device-supplied header->index against sw->config.max_port_number before indexing sw->ports[], but the sibling field entry->dual_link_port_nr -- a 6-bit value also read from the DROM -- indexes the same array with no such check. A malicious or malformed Thunderbolt device can set dual_link_port_nr beyond the allocated sw->ports[] (max_port_number + 1 entries), producing an out-of-bounds tb_port pointer that is stored and later dereferenced. Reject a port entry whose dual_link_port_nr exceeds max_port_number, the same bound already applied to header->index.
Quoted source text, attributed separately from HOL analysis.