{
  "threat_severity" : "Moderate",
  "public_date" : "2026-01-14T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: wifi: mac80211: Discard Beacon frames to non-broadcast address",
    "id" : "2429587",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2429587"
  },
  "cvss3" : {
    "cvss3_base_score" : "6.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
    "status" : "draft"
  },
  "cwe" : "CWE-358",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nwifi: mac80211: Discard Beacon frames to non-broadcast address\nBeacon frames are required to be sent to the broadcast address, see IEEE\nStd 802.11-2020, 11.1.3.1 (\"The Address 1 field of the Beacon .. frame\nshall be set to the broadcast address\"). A unicast Beacon frame might be\nused as a targeted attack to get one of the associated STAs to do\nsomething (e.g., using CSA to move it to another channel). As such, it\nis better have strict filtering for this on the received side and\ndiscard all Beacon frames that are sent to an unexpected address.\nThis is even more important for cases where beacon protection is used.\nThe current implementation in mac80211 is correctly discarding unicast\nBeacon frames if the Protected Frame bit in the Frame Control field is\nset to 0. However, if that bit is set to 1, the logic used for checking\nfor configured BIGTK(s) does not actually work. If the driver does not\nhave logic for dropping unicast Beacon frames with Protected Frame bit\n1, these frames would be accepted in mac80211 processing as valid Beacon\nframes even though they are not protected. This would allow beacon\nprotection to be bypassed. While the logic for checking beacon\nprotection could be extended to cover this corner case, a more generic\ncheck for discard all Beacon frames based on A1=unicast address covers\nthis without needing additional changes.\nAddress all these issues by dropping received Beacon frames if they are\nsent to a non-broadcast address.", "A beacon protection bypass vulnerability was found in the Linux kernel's mac80211 WiFi stack. According to IEEE 802.11-2020, beacon frames must be sent to the broadcast address, but mac80211 incorrectly accepts unicast beacon frames with the Protected Frame bit set to 1. This allows attackers to send targeted unicast beacons that bypass beacon protection (BIGTK verification), potentially forcing associated stations to perform malicious actions like channel switching via CSA." ],
  "statement" : "This vulnerability affects WiFi clients using mac80211-based drivers. An attacker within wireless range can send crafted unicast beacon frames to target specific stations, bypassing beacon protection mechanisms. This could be used to force channel switches or other beacon-triggered behaviors. The attack requires proximity to the target WiFi network.",
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2025-71127\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-71127\nhttps://lore.kernel.org/linux-cve-announce/2026011450-CVE-2025-71127-29a7@gregkh/T" ],
  "name" : "CVE-2025-71127",
  "csaw" : false
}