{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53540",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-10-04T15:14:15.919Z",
        "datePublished": "2025-10-04T15:16:50.079Z",
        "dateUpdated": "2026-08-05T09:14:43.616Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T09:14:43.616Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: reject auth/assoc to AP with our address\n\nIf the AP uses our own address as its MLD address or BSSID, then\nclearly something's wrong. Reject such connections so we don't\ntry and fail later."
                }
            ],
            "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 - The BSS parameters that trigger the bug originate from attacker-transmitted beacon/probe-response frames, which cfg80211 accepts into the scan cache without rejecting a BSSID equal to a local interface address; an attacker in WiFi range can therefore induce the victim's SME to auth/assoc to a self-addressed BSS. Per WiFi frame-injection guidance this is Adjacent.\nAC:L - The attacker fully controls the beacon's BSSID/MLD address and SSID, and the victim STA's MAC address is passively observable from its probe requests; the victim's connection attempt is routine auto-join behavior that the attacker can force by deauthing it from its real AP.\nPR:N - A rogue AP needs no credentials or prior association with the victim, and the failure occurs in the pre-authentication auth/assoc path before any key exchange.\nUI:N - Automatic reconnection to a known/matching SSID by wpa_supplicant or the kernel SME requires no human action, and the attacker can trigger it on demand with a deauth.\nS:U - The WARN_ON and the corrupted MLME state are entirely within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - No out-of-bounds read, uninitialized memory disclosure, or other read primitive is created; the attacker gains no access to kernel or user data.\nI:L - The attacker's rogue BSS causes mac80211 to tear down the legitimate association and leaves inconsistent state behind (`vif.cfg.ap_addr` set to the interface's own address, and in the MLO case a link_sta bearing our own address inserted into `local->link_sta_hash`), a bounded modification of kernel connection state rather than arbitrary write.\nA:H - The path reaches `WARN_ON()` in `sta_info_insert_check()`, which is a kernel panic on the many deployments running `panic_on_warn=1`, and can be triggered repeatedly to persistently deny WiFi connectivity."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/wireless/mlme.c"
                    ],
                    "versions": [
                        {
                            "version": "19957bb399e2722719c0e20c9ae91cf8b6aaff04",
                            "lessThan": "676a423410131d111a264d29aecbe6aadd57fb22",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "19957bb399e2722719c0e20c9ae91cf8b6aaff04",
                            "lessThan": "07added2c6cd63de047bc786b39436322abb67c0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "19957bb399e2722719c0e20c9ae91cf8b6aaff04",
                            "lessThan": "5d4e04bf3a0f098bd9033de3a5291810fa14c7a6",
                            "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/wireless/mlme.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.32",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.32",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.55",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5.5",
                            "lessThanOrEqual": "6.5.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6",
                            "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": "2.6.32",
                                    "versionEndExcluding": "6.1.55"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.5.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.6"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/676a423410131d111a264d29aecbe6aadd57fb22"
                },
                {
                    "url": "https://git.kernel.org/stable/c/07added2c6cd63de047bc786b39436322abb67c0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5d4e04bf3a0f098bd9033de3a5291810fa14c7a6"
                }
            ],
            "title": "wifi: cfg80211: reject auth/assoc to AP with our address",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}