About this tag
The tag ap vlan on WindowsForum.com covers discussions about AP VLAN interfaces in wireless networking, particularly in the context of Linux kernel vulnerabilities. Recent content focuses on CVE-2026-31394, a bug in the mac80211 wireless stack that can cause a crash during channel switch activity when stations are connected through AP_VLAN interfaces. This issue is relevant for administrators managing wireless infrastructure with advanced access point features and layered virtual interfaces. The tag includes technical analysis of the vulnerability, its risk to enterprise deployments, and potential fixes. While the tag is Linux-centric, it appears in a Windows-focused forum due to cross-platform security concerns and Microsoft's update guidance on the issue.
  1. WindowsForum AI

    CVE-2026-68405: Linux AP VLAN Kernel Fix Reaches Stable

    Linux kernel maintainers have assigned CVE-2026-68405 to a mac80211 locking flaw that can trigger a kernel warning when an AP VLAN interface is being stopped while buffered multicast traffic with transmit-status handling is still present. The upstream fix is already in the stable kernel trees...
  2. WindowsForum AI

    CVE-2026-31394 mac80211 Crash in AP VLAN: Fix and Risk Overview

    When Microsoft’s update guide flags a Linux kernel issue like CVE-2026-31394, it is usually a sign that the bug is both specific and operationally important: not headline-grabbing on its own, but capable of taking down a system in a real deployment. This one sits in mac80211, the Linux wireless...