Vulnerability in Linux

[ Description ]Official description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: don't offload TC setup on AP_VLAN interfaces AP_VLAN interfaces are purely virtual, so don't try to offload TC setup to drivers. We can't really use the AP interface either since we may not know it all the time, and it could technically even change. Just reject the TC offload so things get done in software.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund5 Oct 2026WID-SEC-2026-3743

  Linux Kernel: Multiple vulnerabilities Translated from German

  Risk mediumCVE-2026-98221CVE-2026-98181CVE-2026-98248+204 more CVEs

[ References ]References

• git.kernel.org/stable/c/362bd5bce29ed0f6fd3d39a7065567777d70606e
• git.kernel.org/stable/c/40bc8a268c3b6e21fa3a8dd1b4fd85aa905b9718
• git.kernel.org/stable/c/790221efbfece13a2347563b3785aaca48f192e2
• git.kernel.org/stable/c/9c34f01b8f2177dd4e1ee524ca1f9ca3fcd85a11
• git.kernel.org/stable/c/ea3ef2165e4751df2ee3bc1c07a192243a08faa5