{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-71127", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:30:19.655Z", "datePublished": "2026-01-14T15:07:44.218Z", "dateUpdated": "2026-08-05T12:12:13.418Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:12:13.418Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: Discard Beacon frames to non-broadcast address\n\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.\n\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.\n\nAddress all these issues by dropping received Beacon frames if they are\nsent to a non-broadcast address." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - An attacker must inject crafted 802.11 Beacon frames within radio range of the target on its current Wi-Fi channel, making this an adjacent attack.\nAC:L - The target MAC, AP BSSID, and channel are observable, and a crafted Beacon can directly trigger the flaw without a race or condition beyond the attacker’s control.\nPR:N - The receive path performs no attacker privilege or authentication check, and the attacker does not need to associate with the protected network or possess PTK/BIGTK material.\nUI:N - The kernel automatically processes the injected Beacon while the station is associated, without any victim action.\nS:U - The vulnerability affects Wi-Fi management state and availability within the same host kernel security authority, without crossing a VM, sandbox, or IOMMU boundary.\nC:N - The flaw provides no memory disclosure or protected-data read capability, and the affected parsing path shows no out-of-bounds read or use-after-free.\nI:L - Forged Beacons can make unauthorized but bounded changes to channel, bandwidth, transmit power, QoS, and MLO link state, without arbitrary memory modification or code execution.\nA:H - An attacker can force channel switching, block transmit queues, or trigger disconnection, and repeated unauthenticated injection can sustain complete loss of Wi-Fi connectivity." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/mac80211/rx.c" ], "versions": [ { "version": "af2d14b01c32d7cba65f73503586e5b621afb139", "lessThan": "be0974be5c42584e027883ac2af7dab5e950098c", "status": "affected", "versionType": "git" }, { "version": "af2d14b01c32d7cba65f73503586e5b621afb139", "lessThan": "0a59a3895f804469276d188effa511c72e752f35", "status": "affected", "versionType": "git" }, { "version": "af2d14b01c32d7cba65f73503586e5b621afb139", "lessThan": "88aab153d1528bc559292a12fb5105ee97528e1f", "status": "affected", "versionType": "git" }, { "version": "af2d14b01c32d7cba65f73503586e5b621afb139", "lessThan": "6e5bff40bb38741e40c33043ba0816fba5f93661", "status": "affected", "versionType": "git" }, { "version": "af2d14b01c32d7cba65f73503586e5b621afb139", "lessThan": "7b240a8935d554ad36a52c2c37c32039f9afaef2", "status": "affected", "versionType": "git" }, { "version": "af2d14b01c32d7cba65f73503586e5b621afb139", "lessThan": "a21704df4024708be698fb3fd5830d5b113b70e0", "status": "affected", "versionType": "git" }, { "version": "af2d14b01c32d7cba65f73503586e5b621afb139", "lessThan": "193d18f60588e95d62e0f82b6a53893e5f2f19f8", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/mac80211/rx.c" ], "versions": [ { "version": "5.7", "status": "affected" }, { "version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.248", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.198", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.160", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.120", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.65", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.4", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.10.248" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.15.198" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.160" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6.120" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.12.65" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.18.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/be0974be5c42584e027883ac2af7dab5e950098c" }, { "url": "https://git.kernel.org/stable/c/0a59a3895f804469276d188effa511c72e752f35" }, { "url": "https://git.kernel.org/stable/c/88aab153d1528bc559292a12fb5105ee97528e1f" }, { "url": "https://git.kernel.org/stable/c/6e5bff40bb38741e40c33043ba0816fba5f93661" }, { "url": "https://git.kernel.org/stable/c/7b240a8935d554ad36a52c2c37c32039f9afaef2" }, { "url": "https://git.kernel.org/stable/c/a21704df4024708be698fb3fd5830d5b113b70e0" }, { "url": "https://git.kernel.org/stable/c/193d18f60588e95d62e0f82b6a53893e5f2f19f8" } ], "title": "wifi: mac80211: Discard Beacon frames to non-broadcast address", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2025-71127", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-06-10T20:41:39.095624Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-11T18:44:14.717Z" } } ] } }