# CVE-2026-68406: wifi: cfg80211: validate PMSR FTM preamble range

Status: published. Published: 2026-08-10. Updated: 2026-11-06.

In the Linux kernel, the following vulnerability has been resolved:

wifi: cfg80211: validate PMSR FTM preamble range

PMSR FTM request parsing accepts preamble values outside the
enumerated nl80211 preamble range.

Reject out-of-range values before using them in the parser capability
bit test using the policy.

[drop unnecessary check]

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2; < 73ada9f23c2c7fac74474ea2a38ceb265bae17f1 (affected, git); ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2; < 2b97fa1bce7731f6a244f3d4407c61858f09b93f (affected, git); ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2; < 9b33f260db3971f572dda0b45dd28d477cf51ed1 (affected, git); ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2; < 44ea65d779e2d23b2264fea6af2d0c666a3ec9fb (affected, git); ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2; < 922d71fbaf99c1d5318151a0cb0a42ad448d07d9 (affected, git); ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2; < cfbda103aeae61071a122a6fc2bfe98cffbd7165 (affected, git); ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2; < 58320cb47df2accc7a20bb72c0150280732fa58f (affected, git); ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2; < 36230936468f0ba4930e94aef496fc229d4bb951 (affected, git). Source: CNA: Linux
- Linux / Linux: 5.0 (affected); ≥ 0; < 5.0 (unaffected, semver); ≥ 5.10.265; ≤ 5.10.* (unaffected, semver); ≥ 5.15.216; ≤ 5.15.* (unaffected, semver); ≥ 6.1.183; ≤ 6.1.* (unaffected, semver); ≥ 6.6.148; ≤ 6.6.* (unaffected, semver); ≥ 6.12.101; ≤ 6.12.* (unaffected, semver); ≥ 6.18.42; ≤ 6.18.* (unaffected, semver); ≥ 7.1.6; ≤ 7.1.* (unaffected, semver); ≥ 7.2; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.18% as of 2026-11-06; percentile 8.10%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/73ada9f23c2c7fac74474ea2a38ceb265bae17f1 (CNA: Linux)

- https://git.kernel.org/stable/c/2b97fa1bce7731f6a244f3d4407c61858f09b93f (CNA: Linux)

- https://git.kernel.org/stable/c/9b33f260db3971f572dda0b45dd28d477cf51ed1 (CNA: Linux)

- https://git.kernel.org/stable/c/44ea65d779e2d23b2264fea6af2d0c666a3ec9fb (CNA: Linux)

- https://git.kernel.org/stable/c/922d71fbaf99c1d5318151a0cb0a42ad448d07d9 (CNA: Linux)

- https://git.kernel.org/stable/c/cfbda103aeae61071a122a6fc2bfe98cffbd7165 (CNA: Linux)

- https://git.kernel.org/stable/c/58320cb47df2accc7a20bb72c0150280732fa58f (CNA: Linux)

- https://git.kernel.org/stable/c/36230936468f0ba4930e94aef496fc229d4bb951 (CNA: Linux)

- https://git.kernel.org/stable/c/2b97fa1bce7731f6a244f3d4407c61858f09b93f (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/36230936468f0ba4930e94aef496fc229d4bb951 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/44ea65d779e2d23b2264fea6af2d0c666a3ec9fb (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/58320cb47df2accc7a20bb72c0150280732fa58f (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/73ada9f23c2c7fac74474ea2a38ceb265bae17f1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/922d71fbaf99c1d5318151a0cb0a42ad448d07d9 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/9b33f260db3971f572dda0b45dd28d477cf51ed1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/cfbda103aeae61071a122a6fc2bfe98cffbd7165 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-68406; retrieved 2026-11-06; source updated 2026-11-06

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-68406; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-68406; retrieved 2026-11-06; source updated Not reported

Revision: d6e8e213745d4d5920ba2d66c03977d18fc29745d706ec7d682fce2fc39546d7

Canonical: https://y2.dev/cve/CVE-2026-68406

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.