{"api_version":"1","generated_at":"2026-10-24T01:42:40+00:00","cve":"CVE-2026-98423","urls":{"html":"https://cve.report/CVE-2026-98423","api":"https://cve.report/api/cve/CVE-2026-98423.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98423","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98423"},"summary":{"title":"wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: don't hand frames to mac80211 while stopping\n\nThe code checks ->started for frames coming from wmediumd, but the\nradio can be stopped after the check and before frame delivery,\ncausing mac80211 to hit the WARN_ON(!local->started).\n\nExpand the mutex for this case and synchronise against it when the\nradio is stopped to avoid being able to hit the warning with hwsim.\n\nDrop the error print that would've complicated the error path, it\nonly triggers for allocation failures (already noisy) and malformed\nframes anyway.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-14 14:17:53","updated_at":"2026-10-19 10:18:47"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/5c79ef616aa16af582fb2cb93b0f750975a0004f","name":"https://git.kernel.org/stable/c/5c79ef616aa16af582fb2cb93b0f750975a0004f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2f59be7585dc81baa6f36b0035dd6848ea43d318","name":"https://git.kernel.org/stable/c/2f59be7585dc81baa6f36b0035dd6848ea43d318","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb","name":"https://git.kernel.org/stable/c/d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c4e4fe330294e3936e0f4e15d6996468f8a45fb2","name":"https://git.kernel.org/stable/c/c4e4fe330294e3936e0f4e15d6996468f8a45fb2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/87840d4a3a21b1c19b867a80e16ba69dff284de2","name":"https://git.kernel.org/stable/c/87840d4a3a21b1c19b867a80e16ba69dff284de2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5ce9b2bc9e73213e316a8c72400256a76bf41814","name":"https://git.kernel.org/stable/c/5ce9b2bc9e73213e316a8c72400256a76bf41814","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98423","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98423","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7882513bacb176ab4aacceefdd035ca9479da4fb 5ce9b2bc9e73213e316a8c72400256a76bf41814 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7882513bacb176ab4aacceefdd035ca9479da4fb c4e4fe330294e3936e0f4e15d6996468f8a45fb2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7882513bacb176ab4aacceefdd035ca9479da4fb 2f59be7585dc81baa6f36b0035dd6848ea43d318 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7882513bacb176ab4aacceefdd035ca9479da4fb 5c79ef616aa16af582fb2cb93b0f750975a0004f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7882513bacb176ab4aacceefdd035ca9479da4fb d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7882513bacb176ab4aacceefdd035ca9479da4fb 87840d4a3a21b1c19b867a80e16ba69dff284de2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.1","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.189 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.158 6.6.* 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 * 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":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5ce9b2bc9e73213e316a8c72400256a76bf41814","status":"affected","version":"7882513bacb176ab4aacceefdd035ca9479da4fb","versionType":"git"},{"lessThan":"c4e4fe330294e3936e0f4e15d6996468f8a45fb2","status":"affected","version":"7882513bacb176ab4aacceefdd035ca9479da4fb","versionType":"git"},{"lessThan":"2f59be7585dc81baa6f36b0035dd6848ea43d318","status":"affected","version":"7882513bacb176ab4aacceefdd035ca9479da4fb","versionType":"git"},{"lessThan":"5c79ef616aa16af582fb2cb93b0f750975a0004f","status":"affected","version":"7882513bacb176ab4aacceefdd035ca9479da4fb","versionType":"git"},{"lessThan":"d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb","status":"affected","version":"7882513bacb176ab4aacceefdd035ca9479da4fb","versionType":"git"},{"lessThan":"87840d4a3a21b1c19b867a80e16ba69dff284de2","status":"affected","version":"7882513bacb176ab4aacceefdd035ca9479da4fb","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.1"},{"lessThan":"3.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.189","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.158","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","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.189","versionStartIncluding":"3.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.158","versionStartIncluding":"3.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.112","versionStartIncluding":"3.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.54","versionStartIncluding":"3.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.8","versionStartIncluding":"3.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"3.1","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: don't hand frames to mac80211 while stopping\n\nThe code checks ->started for frames coming from wmediumd, but the\nradio can be stopped after the check and before frame delivery,\ncausing mac80211 to hit the WARN_ON(!local->started).\n\nExpand the mutex for this case and synchronise against it when the\nradio is stopped to avoid being able to hit the warning with hwsim.\n\nDrop the error print that would've complicated the error path, it\nonly triggers for allocation failures (already noisy) and malformed\nframes anyway."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:19:16.854Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/5ce9b2bc9e73213e316a8c72400256a76bf41814"},{"url":"https://git.kernel.org/stable/c/c4e4fe330294e3936e0f4e15d6996468f8a45fb2"},{"url":"https://git.kernel.org/stable/c/2f59be7585dc81baa6f36b0035dd6848ea43d318"},{"url":"https://git.kernel.org/stable/c/5c79ef616aa16af582fb2cb93b0f750975a0004f"},{"url":"https://git.kernel.org/stable/c/d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cb"},{"url":"https://git.kernel.org/stable/c/87840d4a3a21b1c19b867a80e16ba69dff284de2"}],"title":"wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98423","datePublished":"2026-10-14T13:27:51.391Z","dateReserved":"2026-09-25T10:25:14.348Z","dateUpdated":"2026-10-19T09:19:16.854Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-14 14:17:53","lastModifiedDate":"2026-10-19 10:18:47","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98423","Ordinal":"1","Title":"wifi: mac80211_hwsim: don't hand frames to mac80211 while stoppi","CVE":"CVE-2026-98423","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98423","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: don't hand frames to mac80211 while stopping\n\nThe code checks ->started for frames coming from wmediumd, but the\nradio can be stopped after the check and before frame delivery,\ncausing mac80211 to hit the WARN_ON(!local->started).\n\nExpand the mutex for this case and synchronise against it when the\nradio is stopped to avoid being able to hit the warning with hwsim.\n\nDrop the error print that would've complicated the error path, it\nonly triggers for allocation failures (already noisy) and malformed\nframes anyway.","Type":"Description","Title":"wifi: mac80211_hwsim: don't hand frames to mac80211 while stoppi"}]}}}