PT-2026-36469 · Linux · Linux Kernel

Published 2026-05-01 · Updated 2026-05-11 · CVE-2026-43052

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description In the mac80211 subsystem, the ieee80211 tdls oper() function fails to verify if a station is a TDLS (Tunneled Direct Link Setup) station when NL80211 TDLS ENABLE LINK is called. The system only checks for the existence of the station, allowing the operation to proceed for non-TDLS stations. This results in unintended side effects, such as the modification of channel context and HT (High Throughput) protection, before the operation eventually fails. The issue is addressed by implementing a check for the sta->sta.tdls variable early in the ENABLE LINK case.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-43052

ECHO-4F7F-C524-3DC3

Affected Products

Linux Kernel

References · 15

• https://git.kernel.org/stable/c/be81f17151fcb8546a95f35ca8f4231b065985de · Patch
• https://git.kernel.org/stable/c/e77b2937aaa20264e4bd699d3244bdb50e7e3343 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43052 · Vendor Advisory
• https://git.kernel.org/stable/c/8148c2fda4ebb17104a573649c9b699208ad10ee · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-43052 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43052 · Security Note
• https://ubuntu.com/security/CVE-2026-43052 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43052 · Security Note
• https://git.kernel.org/stable/c/7d73872d949c488a1d7c308031d6a9d89b5e0a8b · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-43052 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43052 · Vendor Advisory
• https://t.me/CVEtracker/52423 · Telegram Post
• https://git.kernel.org/linus/7d73872d949c488a1d7c308031d6a9d89b5e0a8b · Note
• https://twitter.com/windowsforum/status/2053761240732709274 · Twitter Post
• https://docs.bell-sw.com/security/cves/CVE-2026-43052 · Note