Answer in brief
CVE-2025-71127 records a High severity (CVSS 7.1) vulnerability in wifi: mac80211: Discard Beacon frames to non-broadcast address. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=af2d14b01c32d7cba65f73503586e5b621afb139 <be0974be5c42584e027883ac2af7dab5e950098c || >=af2d14b01c32d7cba65f73503586e5b621afb139 <0a59a3895f804469276d188effa511c72e752f35 || >=af2d14b01c32d7cba65f73503586e5b621afb139 <88aab153d1528bc559292a12fb5105ee97528e1f || >=af2d14b01c32d7cba65f73503586e5b621afb139 <6e5bff40bb38741e40c33043ba0816fba5f93661 || >=af2d14b01c32d7cba65f73503586e5b621afb139 <7b240a8935d554ad36a52c2c37c32039f9afaef2 || >=af2d14b01c32d7cba65f73503586e5b621afb139 <a21704df4024708be698fb3fd5830d5b113b70e0 || >=af2d14b01c32d7cba65f73503586e5b621afb139 <193d18f60588e95d62e0f82b6a53893e5f2f19f8 | be0974be5c42584e027883ac2af7dab5e950098c, 0a59a3895f804469276d188effa511c72e752f35, 88aab153d1528bc559292a12fb5105ee97528e1f, 6e5bff40bb38741e40c33043ba0816fba5f93661, 7b240a8935d554ad36a52c2c37c32039f9afaef2, a21704df4024708be698fb3fd5830d5b113b70e0, 193d18f60588e95d62e0f82b6a53893e5f2f19f8 |
| Linux/Linuxgeneric | 5.7 | Not reported |
Published upstream
Jan 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 19, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Discard Beacon frames to non-broadcast address Beacon frames are required to be sent to the broadcast address, see IEEE Std 802.11-2020, 11.1.3.1 ("The Address 1 field of the Beacon .. frame shall be set to the broadcast address"). A unicast Beacon frame might be used as a targeted attack to get one of the associated STAs to do something (e.g., using CSA to move it to another channel). As such, it is better have strict filtering for this on the received side and discard all Beacon frames that are sent to an unexpected address. This is even more important for cases where beacon protection is used. The current implementation in mac80211 is correctly discarding unicast Beacon frames if the Protected Frame bit in the Frame Control field is set to 0. However, if that bit is set to 1, the logic used for checking for configured BIGTK(s) does not actually work. If the driver does not have logic for dropping unicast Beacon frames with Protected Frame bit 1, these frames would be accepted in mac80211 processing as valid Beacon frames even though they are not protected. This would allow beacon protection to be bypassed. While the logic for checking beacon protection could be extended to cover this corner case, a more generic check for discard all Beacon frames based on A1=unicast address covers this without needing additional changes. Address all these issues by dropping received Beacon frames if they are sent to a non-broadcast address.
Quoted source text, attributed separately from HOL analysis.