CVE-2026-74744: ipvlan: inherit needed_headroom and needed_tailroom from phy_dev
CSIRTS triage
- What
- ipvlan interface fails to inherit required buffer headroom and tailroom from the underlying physical device.
- Who is affected
- Systems using ipvlan virtual interfaces.
- Urgency
- Medium severity (CVSS 4.7); causes packet handling issues on affected configurations.
- Action
- Apply kernel patch for ipvlan device inheritance of buffer requirements.
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-2026-74744
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-2026-747440.52% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-74744 | coverage & exploitation status | NVD · CVE.org |
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