{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64174",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T07:54:57.039Z",
        "datePublished": "2026-07-19T15:40:59.360Z",
        "dateUpdated": "2026-07-19T15:40:59.360Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-07-19T15:40:59.360Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: advance loop vars in cfg80211_merge_profile()\n\ncfg80211_merge_profile() reassembles a Multi-BSSID non-transmitted BSS\nprofile that has been split across multiple consecutive MBSSID elements.\nIts while-loop calls\n\n\tcfg80211_get_profile_continuation(ie, ielen, mbssid_elem, sub_elem)\n\nbut never advances mbssid_elem or sub_elem inside the body.  Each\niteration therefore searches for a continuation that follows the same\nfixed pair; the helper returns the same next_mbssid; and the same\nnext_sub bytes are memcpy()'d into merged_ie at a growing offset until\nthe buffer fills.\n\nAdvance both mbssid_elem and sub_elem to the just-consumed continuation\nso the next call to cfg80211_get_profile_continuation() searches for a\nfurther continuation beyond it (or returns NULL when none exists).\n\nA specially-crafted malicious beacon can take advantage of this bug\nto cause the kernel to spend an excessive amount of time in\ncfg80211_merge_profile (up to as much as 2ms per beacon received),\nwhich could theoretically be abused in some way."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/wireless/scan.c"
                    ],
                    "versions": [
                        {
                            "version": "fe806e4992c9047affd263bcc13b2c047029a726",
                            "lessThan": "5817e1e5205498a5df66eba2b34e817f4210fd0f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fe806e4992c9047affd263bcc13b2c047029a726",
                            "lessThan": "cedbb608494ba1e7a5c6c56b7f1d3fd470094f28",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fe806e4992c9047affd263bcc13b2c047029a726",
                            "lessThan": "c0bc4c8bd556cbe036a5b9ed333c0aab9aadfcb8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fe806e4992c9047affd263bcc13b2c047029a726",
                            "lessThan": "1ced0f5a851f9cae274545a42a06c459b7fd8881",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fe806e4992c9047affd263bcc13b2c047029a726",
                            "lessThan": "67915715fd3874057457363c87c63e18829527df",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fe806e4992c9047affd263bcc13b2c047029a726",
                            "lessThan": "6cfae4914439878b8acb35c7e3b40096eeb2ad9c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fe806e4992c9047affd263bcc13b2c047029a726",
                            "lessThan": "1343a480f84b80c1249133a90ef87f8751d65cbb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fe806e4992c9047affd263bcc13b2c047029a726",
                            "lessThan": "7666dbb1bacc4ba522b96740cba7283d243d16e1",
                            "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/scan.c"
                    ],
                    "versions": [
                        {
                            "version": "5.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.258",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.175",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.142",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.92",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.34",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.11",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "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": "5.2",
                                    "versionEndExcluding": "5.10.258"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "5.15.209"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "6.1.175"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "6.6.142"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "6.12.92"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "6.18.34"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "7.0.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/5817e1e5205498a5df66eba2b34e817f4210fd0f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cedbb608494ba1e7a5c6c56b7f1d3fd470094f28"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c0bc4c8bd556cbe036a5b9ed333c0aab9aadfcb8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1ced0f5a851f9cae274545a42a06c459b7fd8881"
                },
                {
                    "url": "https://git.kernel.org/stable/c/67915715fd3874057457363c87c63e18829527df"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6cfae4914439878b8acb35c7e3b40096eeb2ad9c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1343a480f84b80c1249133a90ef87f8751d65cbb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7666dbb1bacc4ba522b96740cba7283d243d16e1"
                }
            ],
            "title": "wifi: cfg80211: advance loop vars in cfg80211_merge_profile()",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}