What’s Vulnerable › Vulnerabilities

CVE-2026-43052: wifi: mac80211: check tdls flag in ieee80211_tdls_oper

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-01 · updated 2026-10-15

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.

Affected products

• Linux kernel: from 3.2 before 6.12.81; from 6.13 before 6.18.22; from 6.19 before 6.19.12; 7.0-rc1, 7.0-rc2, 7.0-rc3, 7.0-rc4 — fixed in 6.12.81, 6.18.22, 6.19.12

How to fix

Upgrade to a fixed version: Linux kernel 6.12.81, 6.18.22, 6.19.12. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/44839ea7e96b3659a1606f3d5267063135479b7c
• https://git.kernel.org/stable/c/6813a8b1b240756dad4375f3e020ce10e4e3871b
• https://git.kernel.org/stable/c/7d73872d949c488a1d7c308031d6a9d89b5e0a8b
• https://git.kernel.org/stable/c/8148c2fda4ebb17104a573649c9b699208ad10ee
• https://git.kernel.org/stable/c/ba5b43db126a5e7378553869e3f7954d9187349f
• https://git.kernel.org/stable/c/be81f17151fcb8546a95f35ca8f4231b065985de
• https://git.kernel.org/stable/c/e602246235fc2ef06c39b2e9cf147d84d0896b73
• https://git.kernel.org/stable/c/e77b2937aaa20264e4bd699d3244bdb50e7e3343
• https://cert-portal.siemens.com/productcert/html/ssa-784472.html

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