# wifi: mac80211: reset the AP_VLAN tailroom counter on ifdown

CVE record · `CVE-2026-98422`

- **Identifiers:** `CVE-2026-98422`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 14 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 14 Oct 2026, 13:27 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 to before b0b32d3f163d24ea7134380666193bf398e9dc0b` (git)
  - affected: `f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 to before f6b34a7d64324faf28eedc0f8678b0f832f1cc36` (git)
  - affected: `f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 to before 304a874670a0b6ab5589a7f60b4af0251797b121` (git)
  - affected: `f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 to before 7775759e3cb35ef5a571b2d877c2a9b70a5d5f08` (git)
  - affected: `f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 to before 3d76b45e8432c0d75fcb9e90d92eaa3176898adf` (git)
  - affected: `f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 to before 4b54d01b48445b66c9e576de92b90a3a3ae7b34a` (git)
  - affected: `f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 to before 875835377d8d62c849b4eb03a7abfafa71d7668f` (git)
  - affected: `f9dca80b98caac8b4bfb43a2edf1e9f877ccf322 to before 4504f3960dc4501c73be9f99eabda2e26e9db41e` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.1`
  - unaffected: `before 4.1` (semver)
  - unaffected: `5.10.271 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.222 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.112 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.54 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.8 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0022, the 12th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 14 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98422](https://www.cve.org/CVERecord?id=CVE-2026-98422)
- [NVD: CVE-2026-98422](https://nvd.nist.gov/vuln/detail/CVE-2026-98422)

### References from the CNA

- <https://git.kernel.org/stable/c/b0b32d3f163d24ea7134380666193bf398e9dc0b>
- <https://git.kernel.org/stable/c/f6b34a7d64324faf28eedc0f8678b0f832f1cc36>
- <https://git.kernel.org/stable/c/304a874670a0b6ab5589a7f60b4af0251797b121>
- <https://git.kernel.org/stable/c/7775759e3cb35ef5a571b2d877c2a9b70a5d5f08>
- <https://git.kernel.org/stable/c/3d76b45e8432c0d75fcb9e90d92eaa3176898adf>
- <https://git.kernel.org/stable/c/4b54d01b48445b66c9e576de92b90a3a3ae7b34a>
- <https://git.kernel.org/stable/c/875835377d8d62c849b4eb03a7abfafa71d7668f>
- <https://git.kernel.org/stable/c/4504f3960dc4501c73be9f99eabda2e26e9db41e>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-98422>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98422/>. Everything for agents: <https://agentprime.io/llms.txt>.