CVE-2026-80590: inet: frags: strip GSO state from fragments before reassembly
CSIRTS triage
- What
- The inet fragments subsystem does not strip Generic Segmentation Offload state from fragments before reassembly, potentially causing denial of service.
- Who is affected
- Systems running Linux kernel with GSO and IP fragmentation handling enabled.
- Urgency
- Medium severity (CVSS 5.5); not currently exploited but should be patched in routine updates.
- Action
- Apply kernel security patch addressing CVE-2026-80590 when available from your distribution.
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-2026-80590
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-2026-805900.59% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 46% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-80590 | coverage & exploitation status | NVD · CVE.org |
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