{"api_version":"1","generated_at":"2026-10-06T22:37:52+00:00","cve":"CVE-2026-98327","urls":{"html":"https://cve.report/CVE-2026-98327","api":"https://cve.report/api/cve/CVE-2026-98327.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98327","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98327"},"summary":{"title":"wifi: mac80211: mesh: reset the CSA state when leaving","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: reset the CSA state when leaving\n\nifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed\nin ieee80211_mesh_finish_csa(), i.e. when the channel switch completes.\nLeaving the mesh while a switch is still pending therefore leaks it.\n\nAdditionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak\nin this case, so things can get mixed up in addition to the memory\nleak.\n\nRefactor the reset and call it in ieee80211_stop_mesh() to fix it all.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-06 09:18:24","updated_at":"2026-10-06 09:18:24"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/aba8dfb45864441199748c33ce3c1c8ca121c8bd","name":"https://git.kernel.org/stable/c/aba8dfb45864441199748c33ce3c1c8ca121c8bd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/860134b3af77970e006feab7e5decb8c84771c7f","name":"https://git.kernel.org/stable/c/860134b3af77970e006feab7e5decb8c84771c7f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ba5bf83a81e8832cb84bb3a2da67512f81f57a02","name":"https://git.kernel.org/stable/c/ba5bf83a81e8832cb84bb3a2da67512f81f57a02","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bd3b21145ae2e781daac1bbd19216a63ab4e0cbd","name":"https://git.kernel.org/stable/c/bd3b21145ae2e781daac1bbd19216a63ab4e0cbd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98327","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98327","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8456a14e9d2770846fcf74de18ff95b676149a3 aba8dfb45864441199748c33ce3c1c8ca121c8bd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8456a14e9d2770846fcf74de18ff95b676149a3 bd3b21145ae2e781daac1bbd19216a63ab4e0cbd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8456a14e9d2770846fcf74de18ff95b676149a3 ba5bf83a81e8832cb84bb3a2da67512f81f57a02 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b8456a14e9d2770846fcf74de18ff95b676149a3 860134b3af77970e006feab7e5decb8c84771c7f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.13","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.112 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.54 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.8 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc4 * 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/mac80211/mesh.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"aba8dfb45864441199748c33ce3c1c8ca121c8bd","status":"affected","version":"b8456a14e9d2770846fcf74de18ff95b676149a3","versionType":"git"},{"lessThan":"bd3b21145ae2e781daac1bbd19216a63ab4e0cbd","status":"affected","version":"b8456a14e9d2770846fcf74de18ff95b676149a3","versionType":"git"},{"lessThan":"ba5bf83a81e8832cb84bb3a2da67512f81f57a02","status":"affected","version":"b8456a14e9d2770846fcf74de18ff95b676149a3","versionType":"git"},{"lessThan":"860134b3af77970e006feab7e5decb8c84771c7f","status":"affected","version":"b8456a14e9d2770846fcf74de18ff95b676149a3","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/mac80211/mesh.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.13"},{"lessThan":"3.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.112","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.54","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc4","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.112","versionStartIncluding":"3.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.54","versionStartIncluding":"3.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.8","versionStartIncluding":"3.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc4","versionStartIncluding":"3.13","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: reset the CSA state when leaving\n\nifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed\nin ieee80211_mesh_finish_csa(), i.e. when the channel switch completes.\nLeaving the mesh while a switch is still pending therefore leaks it.\n\nAdditionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak\nin this case, so things can get mixed up in addition to the memory\nleak.\n\nRefactor the reset and call it in ieee80211_stop_mesh() to fix it all."}],"providerMetadata":{"dateUpdated":"2026-10-06T08:46:20.317Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/aba8dfb45864441199748c33ce3c1c8ca121c8bd"},{"url":"https://git.kernel.org/stable/c/bd3b21145ae2e781daac1bbd19216a63ab4e0cbd"},{"url":"https://git.kernel.org/stable/c/ba5bf83a81e8832cb84bb3a2da67512f81f57a02"},{"url":"https://git.kernel.org/stable/c/860134b3af77970e006feab7e5decb8c84771c7f"}],"title":"wifi: mac80211: mesh: reset the CSA state when leaving","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98327","datePublished":"2026-10-06T08:46:20.317Z","dateReserved":"2026-09-25T10:25:14.341Z","dateUpdated":"2026-10-06T08:46:20.317Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-06 09:18:24","lastModifiedDate":"2026-10-06 09:18:24","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98327","Ordinal":"1","Title":"wifi: mac80211: mesh: reset the CSA state when leaving","CVE":"CVE-2026-98327","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98327","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: reset the CSA state when leaving\n\nifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed\nin ieee80211_mesh_finish_csa(), i.e. when the channel switch completes.\nLeaving the mesh while a switch is still pending therefore leaks it.\n\nAdditionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak\nin this case, so things can get mixed up in addition to the memory\nleak.\n\nRefactor the reset and call it in ieee80211_stop_mesh() to fix it all.","Type":"Description","Title":"wifi: mac80211: mesh: reset the CSA state when leaving"}]}}}