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CVE-2025-71127— wifi: mac80211: Discard Beacon frames to non-broadcast address

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确丢弃发送到非广播地址的信标帧，可能导致攻击者发起针对性攻击。

CVSS 7.1 · High EPSS 0.23% · P13

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux af2d14b01c32d7cba65f73503586e5b621afb139< be0974be5c42584e027883ac2af7dab5e950098c affected
af2d14b01c32d7cba65f73503586e5b621afb139< 0a59a3895f804469276d188effa511c72e752f35 affected
af2d14b01c32d7cba65f73503586e5b621afb139< 88aab153d1528bc559292a12fb5105ee97528e1f affected
af2d14b01c32d7cba65f73503586e5b621afb139< 6e5bff40bb38741e40c33043ba0816fba5f93661 affected
af2d14b01c32d7cba65f73503586e5b621afb139< 7b240a8935d554ad36a52c2c37c32039f9afaef2 affected
af2d14b01c32d7cba65f73503586e5b621afb139< a21704df4024708be698fb3fd5830d5b113b70e0 affected
af2d14b01c32d7cba65f73503586e5b621afb139< 193d18f60588e95d62e0f82b6a53893e5f2f19f8 affected
5.7 affected
… +8 more rows
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I. Basic Information for CVE-2025-71127

Vulnerability Information
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Vulnerability Title
wifi: mac80211: Discard Beacon frames to non-broadcast address
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确丢弃发送到非广播地址的信标帧，可能导致攻击者发起针对性攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux af2d14b01c32d7cba65f73503586e5b621afb139 ~ be0974be5c42584e027883ac2af7dab5e950098c -
Linux Linux 5.7 -

II. Public POCs for CVE-2025-71127

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III. Intelligence Information for CVE-2025-71127

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Same Patch Batch · Linux · 2026-01-14 · 43 CVEs total

CVE-2025-71116 9.1 CRITICAL libceph: make decode_pool() more resilient against corrupted osdmaps
CVE-2025-71112 8.8 HIGH net: hns3: add VLAN id validation before using
CVE-2025-71130 7.8 HIGH drm/i915/gem: Zero-initialize the eb.vma array in i915_gem_do_execbuffer
CVE-2025-71120 7.5 HIGH SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf
CVE-2025-71126 7.5 HIGH mptcp: avoid deadlock on fallback while reinjecting
CVE-2025-71128 7.5 HIGH erspan: Initialize options_len before referencing options.
CVE-2025-71131 7.5 HIGH crypto: seqiv - Do not use req->iv after crypto_aead_encrypt
CVE-2025-71132 7.5 HIGH smc91x: fix broken irq-context in PREEMPT_RT
CVE-2025-71136 7.1 HIGH media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status()
CVE-2025-71109 7.1 HIGH MIPS: ftrace: Fix memory corruption when kernel is located beyond 32 bits
CVE-2025-71111 hwmon: (w83791d) Convert macros to functions to avoid TOCTOU
CVE-2025-71110 mm/slub: reset KASAN tag in defer_free() before accessing freed memory
CVE-2025-71104 KVM: x86: Fix VM hard lockup after prolonged inactivity with periodic HV timer
CVE-2025-71114 via_wdt: fix critical boot hang due to unnamed resource allocation
CVE-2025-71115 um: init cpu_tasks[] earlier
CVE-2025-71103 drm/msm: adreno: fix deferencing ifpc_reglist when not declared
CVE-2025-71117 block: Remove queue freezing from several sysfs store callbacks
CVE-2025-71118 ACPICA: Avoid walking the Namespace if start_node is NULL
CVE-2025-71102 scs: fix a wrong parameter in __scs_magic
CVE-2025-71105 f2fs: use global inline_xattr_slab instead of per-sb slab cache

Showing top 20 of 43 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-71127

Anonymous User
2026-01-15 06:08:14

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