{"api_version":"1","generated_at":"2026-07-20T14:42:29+00:00","cve":"CVE-2026-64174","urls":{"html":"https://cve.report/CVE-2026-64174","api":"https://cve.report/api/cve/CVE-2026-64174.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64174","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64174"},"summary":{"title":"wifi: cfg80211: advance loop vars in cfg80211_merge_profile()","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:59","updated_at":"2026-07-19 16:17:59"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/67915715fd3874057457363c87c63e18829527df","name":"https://git.kernel.org/stable/c/67915715fd3874057457363c87c63e18829527df","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1343a480f84b80c1249133a90ef87f8751d65cbb","name":"https://git.kernel.org/stable/c/1343a480f84b80c1249133a90ef87f8751d65cbb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7666dbb1bacc4ba522b96740cba7283d243d16e1","name":"https://git.kernel.org/stable/c/7666dbb1bacc4ba522b96740cba7283d243d16e1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cedbb608494ba1e7a5c6c56b7f1d3fd470094f28","name":"https://git.kernel.org/stable/c/cedbb608494ba1e7a5c6c56b7f1d3fd470094f28","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1ced0f5a851f9cae274545a42a06c459b7fd8881","name":"https://git.kernel.org/stable/c/1ced0f5a851f9cae274545a42a06c459b7fd8881","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c0bc4c8bd556cbe036a5b9ed333c0aab9aadfcb8","name":"https://git.kernel.org/stable/c/c0bc4c8bd556cbe036a5b9ed333c0aab9aadfcb8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6cfae4914439878b8acb35c7e3b40096eeb2ad9c","name":"https://git.kernel.org/stable/c/6cfae4914439878b8acb35c7e3b40096eeb2ad9c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5817e1e5205498a5df66eba2b34e817f4210fd0f","name":"https://git.kernel.org/stable/c/5817e1e5205498a5df66eba2b34e817f4210fd0f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64174","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64174","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fe806e4992c9047affd263bcc13b2c047029a726 5817e1e5205498a5df66eba2b34e817f4210fd0f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fe806e4992c9047affd263bcc13b2c047029a726 cedbb608494ba1e7a5c6c56b7f1d3fd470094f28 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fe806e4992c9047affd263bcc13b2c047029a726 c0bc4c8bd556cbe036a5b9ed333c0aab9aadfcb8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fe806e4992c9047affd263bcc13b2c047029a726 1ced0f5a851f9cae274545a42a06c459b7fd8881 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.209 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.175 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.142 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/wireless/scan.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5817e1e5205498a5df66eba2b34e817f4210fd0f","status":"affected","version":"fe806e4992c9047affd263bcc13b2c047029a726","versionType":"git"},{"lessThan":"cedbb608494ba1e7a5c6c56b7f1d3fd470094f28","status":"affected","version":"fe806e4992c9047affd263bcc13b2c047029a726","versionType":"git"},{"lessThan":"c0bc4c8bd556cbe036a5b9ed333c0aab9aadfcb8","status":"affected","version":"fe806e4992c9047affd263bcc13b2c047029a726","versionType":"git"},{"lessThan":"1ced0f5a851f9cae274545a42a06c459b7fd8881","status":"affected","version":"fe806e4992c9047affd263bcc13b2c047029a726","versionType":"git"},{"lessThan":"67915715fd3874057457363c87c63e18829527df","status":"affected","version":"fe806e4992c9047affd263bcc13b2c047029a726","versionType":"git"},{"lessThan":"6cfae4914439878b8acb35c7e3b40096eeb2ad9c","status":"affected","version":"fe806e4992c9047affd263bcc13b2c047029a726","versionType":"git"},{"lessThan":"1343a480f84b80c1249133a90ef87f8751d65cbb","status":"affected","version":"fe806e4992c9047affd263bcc13b2c047029a726","versionType":"git"},{"lessThan":"7666dbb1bacc4ba522b96740cba7283d243d16e1","status":"affected","version":"fe806e4992c9047affd263bcc13b2c047029a726","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/wireless/scan.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.2"},{"lessThan":"5.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.142","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.258","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.142","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"5.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:59.360Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64174","datePublished":"2026-07-19T15:40:59.360Z","dateReserved":"2026-07-19T07:54:57.039Z","dateUpdated":"2026-07-19T15:40:59.360Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:59","lastModifiedDate":"2026-07-19 16:17:59","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64174","Ordinal":"1","Title":"wifi: cfg80211: advance loop vars in cfg80211_merge_profile()","CVE":"CVE-2026-64174","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64174","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"wifi: cfg80211: advance loop vars in cfg80211_merge_profile()"}]}}}