CVE-2026-43052

A flaw was found in the Linux kernel's mac80211 wireless stack. For NL80211_TDLS_ENABLE_LINK, the driver verified that a station exists but not that it was an actual TDLS peer, so TDLS-specific side effects could run for ordinary stations and disturb channel context and HT protection before the operation ultimately failed. Upstream adds an early sta->sta.tdls check so only true TDLS peers proceed.

Red Hat acknowledges the mac80211 fix: NL80211_TDLS_ENABLE_LINK must verify the station is a TDLS peer before running setup side effects. Otherwise channel context and HT protection could be altered for non-TDLS stations before the operation fails.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, prevent the mac80211 module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.