What is CVE-2025-21891?

CVE-2025-21891 is a security advisory published by Microsoft Security Response Center (MSRC). ipvlan: ensure network headers are in skb linear part

Which CVE IDs does CVE-2025-21891 cover?

CVE-2025-21891 covers the following CVE IDs: CVE-2025-21891. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

CVE-2025-21891 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

CVE-2025-21891CVSS 5.5

Vendor

Published

July 11, 2026

Last Modified

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