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Microsoft Security Response CenterCVE-2026-80842

net: bridge: mcast: fix use-after-free of a master VLAN's multicast context

Mariner

5.7CVSS out of 10Medium severity
Scope

What the vendor says is affected

  • azl3 kernel 6.6.150.1-1 on Azure Linux 3.0
Next step

What the vendor recommends

See the Microsoft Security Update Guide for the update that applies to your product.

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory