CVE-2026-43052
Description
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.
Statement
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.
Mitigation
To mitigate this issue, prevent the mac80211 module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | 7.1 | N/A |
| Attack Vector | Local | Local | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | Low | Low | N/A |
| User Interaction | None | None | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | None | None | N/A |
| Integrity Impact | None | High | N/A |
| Availability Impact | High | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
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