CVE-2026-74585: thunderbolt: Bound the DROM dual link port number before indexing sw->ports
CSIRTS triage
- What
- Array bounds check missing before accessing switch port array during Thunderbolt DROM dual link port processing.
- Who is affected
- Systems with Thunderbolt controllers running vulnerable Linux kernel versions.
- Urgency
- Medium priority; out-of-bounds read may leak sensitive memory.
- Action
- Apply kernel security update addressing CVE-2026-74585 when available.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-74585
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-745850.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-74585 | coverage & exploitation status | NVD · CVE.org |
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