CVE-2026-98336: wifi: mac80211: don't offload TC setup on AP_VLAN interfaces

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-06 · updated 2026-10-19

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.

Affected products

Linux kernel: 6.4 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

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

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