tun: Require CAP_NET_ADMIN to attach to an ownerless device
? CVE-2026-99281 · score 7.8/10
What could go wrong?
Microsoft fixed a security weakness. Details are limited to avoid helping attackers.
How urgent is it?
Check Microsoft’s page for details.
Who is affected?
azl4 kernel 6.18.57-1.6.azl4 on Azure Linux 4.0, azl3 kernel 6.6.161.1-1 on Azure Linux 3.0
What should I do?
Install this month’s updates via Windows Update, Intune or your update tool, then restart.
Known problems
Microsoft lists known issues per update: no KB article listed. Official page.