# CVE-2026-68309: wifi: mt76: connac: fix possible NULL-pointer deref in mt76_connac_mcu_uni_bss_he_tlv()

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

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

wifi: mt76: connac: fix possible NULL-pointer deref in mt76_connac_mcu_uni_bss_he_tlv()

mt76_connac_get_he_phy_cap routine can theoretically return NULL so
check cap pointer before dereferencing it.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ d0e274af2f2e44b9d496f5d2c0431fdd2ea76fb8; < d1f8705d6545d20950991785306d08884b0056fc (affected, git); ≥ d0e274af2f2e44b9d496f5d2c0431fdd2ea76fb8; < 91eb15c026debd8b7bfbd83f062e6245a4e69964 (affected, git); ≥ d0e274af2f2e44b9d496f5d2c0431fdd2ea76fb8; < b09508dd7bc4a8948ea00603041a918c09788502 (affected, git); ≥ d0e274af2f2e44b9d496f5d2c0431fdd2ea76fb8; < 2afc2d5098866518a5c446a2e647b1b3f43daaf4 (affected, git); ≥ d0e274af2f2e44b9d496f5d2c0431fdd2ea76fb8; < c058786b09cfab080125bc3ee7928a181dcbd37a (affected, git); ≥ d0e274af2f2e44b9d496f5d2c0431fdd2ea76fb8; < 8709c66e665a2a09192853d4f3d0fb4bd0f76403 (affected, git); ≥ d0e274af2f2e44b9d496f5d2c0431fdd2ea76fb8; < 2c1fb2335f5e3afb34f91bc07ecb63517c328090 (affected, git). Source: CNA: Linux
- Linux / Linux: 5.12 (affected); ≥ 0; < 5.12 (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: 0.17% as of 2026-11-06; percentile 6.73%

- 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/d1f8705d6545d20950991785306d08884b0056fc (CNA: Linux)

- https://git.kernel.org/stable/c/91eb15c026debd8b7bfbd83f062e6245a4e69964 (CNA: Linux)

- https://git.kernel.org/stable/c/b09508dd7bc4a8948ea00603041a918c09788502 (CNA: Linux)

- https://git.kernel.org/stable/c/2afc2d5098866518a5c446a2e647b1b3f43daaf4 (CNA: Linux)

- https://git.kernel.org/stable/c/c058786b09cfab080125bc3ee7928a181dcbd37a (CNA: Linux)

- https://git.kernel.org/stable/c/8709c66e665a2a09192853d4f3d0fb4bd0f76403 (CNA: Linux)

- https://git.kernel.org/stable/c/2c1fb2335f5e3afb34f91bc07ecb63517c328090 (CNA: Linux)

- https://git.kernel.org/stable/c/2afc2d5098866518a5c446a2e647b1b3f43daaf4 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/2c1fb2335f5e3afb34f91bc07ecb63517c328090 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/8709c66e665a2a09192853d4f3d0fb4bd0f76403 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/91eb15c026debd8b7bfbd83f062e6245a4e69964 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/b09508dd7bc4a8948ea00603041a918c09788502 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/c058786b09cfab080125bc3ee7928a181dcbd37a (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/d1f8705d6545d20950991785306d08884b0056fc (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-68309; retrieved 2026-11-06; source updated 2026-11-06

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-68309; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-68309; retrieved 2026-11-06; source updated Not reported

Revision: 4658ec9d989ad8f78789ec7d0346457ed872b6e5054cea5f893d5e91e40c7421

Canonical: https://y2.dev/cve/CVE-2026-68309

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

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