CVE-2026-74585

CVE CVE-2026-74585EUVD EUVD-2026-64522Published 2026-08-22T15:31:38.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 6.12.104; cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <6c892ed9f4129ae40ef0f92e1bb31aa0b0ddc72c; patch: 6.1.183; 3.17; cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <b98e1e28bd95b0fa33164eec1e763d26c7058b39; patch: 7.1.9; cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <d6764992f17b23d91ff93ce905ab53c2aa7191f0; cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <f32c3a9a77cfb50934a60b05d5407649af062535; cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <40d2ffb74094cf36edbe05855566a4c58b6ce808; patch: 6.18.45; patch: 0; cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <50f0c8dd8c3390f851cfb97ca13116f9ee6469d1; patch: 5.15.216; cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <f28066057134aa9294caa597b670daf505ad9dce; patch: 7.2; patch: 5.10.265; patch: 6.6.152; cd22e73bdf5eff7e68a0f8bdfbce123ad43651f6 <3d3c212b70633332ab71672aa2bc6af257d2ec83

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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