{"api_version":"1","generated_at":"2026-10-21T13:33:16+00:00","cve":"CVE-2026-98706","urls":{"html":"https://cve.report/CVE-2026-98706","api":"https://cve.report/api/cve/CVE-2026-98706.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98706","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98706"},"summary":{"title":"wifi: mac80211: drain PS delivery work during station teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: drain PS delivery work during station teardown\n\nRemoving an AP or mesh station can notify the driver and wake TXQs after\nthe station has already been removed from the driver, and can update\nnum_sta_ps and the power-save queues after station cleanup has purged\nthem.\n\nsta_deliver_ps_frames() tests sta->dead only before it starts delivery. A\nworker that passes that test can be delayed while teardown sets sta->dead\nand removes the station from the driver; when it resumes it still runs the\nfull delivery.\n\nThe existing cancel_work_sync() sits near the end of\n__cleanup_single_sta(), after the final driver state transition and after\nPS accounting and queue purging, so it drains the worker only once the\nstate it has to protect has already changed. Before commit d34ba2168a3c\n(\"mac80211: don't delay station destruction\") cleanup was deferred\nthrough the same ordered workqueue as the delivery work, which kept the\ntwo ordered.\n\nCancel the work after setting sta->dead and before moving the driver\nstate, and move the existing cancellation to the start of\n__cleanup_single_sta(). The first drain closes the driver-lifetime window;\ndriver callbacks during the remaining state transitions can still queue\ndrv_deliver_wk through ieee80211_sta_block_awake(), so retain the second\ndrain at the start of __cleanup_single_sta(). That drain also covers\ninsertion failures, which reach cleanup without setting sta->dead.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:17:24","updated_at":"2026-10-19 10:19:34"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/097460fcdd8ab9ef6f6018b2fdc29ba0ea499298","name":"https://git.kernel.org/stable/c/097460fcdd8ab9ef6f6018b2fdc29ba0ea499298","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/843d3a1e6f25027ac85f88f67b95d82c67306dee","name":"https://git.kernel.org/stable/c/843d3a1e6f25027ac85f88f67b95d82c67306dee","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/67a9e80c3ca20c9044cd6ee72cd6278dd19b5023","name":"https://git.kernel.org/stable/c/67a9e80c3ca20c9044cd6ee72cd6278dd19b5023","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/772bd89304ecf057cc51ce4ce24a1a96ac9c8de3","name":"https://git.kernel.org/stable/c/772bd89304ecf057cc51ce4ce24a1a96ac9c8de3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98706","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98706","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d34ba2168a3c10e7301cca06069c39865b4c3ec6 843d3a1e6f25027ac85f88f67b95d82c67306dee git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d34ba2168a3c10e7301cca06069c39865b4c3ec6 772bd89304ecf057cc51ce4ce24a1a96ac9c8de3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d34ba2168a3c10e7301cca06069c39865b4c3ec6 097460fcdd8ab9ef6f6018b2fdc29ba0ea499298 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d34ba2168a3c10e7301cca06069c39865b4c3ec6 67a9e80c3ca20c9044cd6ee72cd6278dd19b5023 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.113 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.56 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.10 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":["net/mac80211/sta_info.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"843d3a1e6f25027ac85f88f67b95d82c67306dee","status":"affected","version":"d34ba2168a3c10e7301cca06069c39865b4c3ec6","versionType":"git"},{"lessThan":"772bd89304ecf057cc51ce4ce24a1a96ac9c8de3","status":"affected","version":"d34ba2168a3c10e7301cca06069c39865b4c3ec6","versionType":"git"},{"lessThan":"097460fcdd8ab9ef6f6018b2fdc29ba0ea499298","status":"affected","version":"d34ba2168a3c10e7301cca06069c39865b4c3ec6","versionType":"git"},{"lessThan":"67a9e80c3ca20c9044cd6ee72cd6278dd19b5023","status":"affected","version":"d34ba2168a3c10e7301cca06069c39865b4c3ec6","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/mac80211/sta_info.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.14"},{"lessThan":"3.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.56","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.10","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":"6.12.113","versionStartIncluding":"3.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.56","versionStartIncluding":"3.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.10","versionStartIncluding":"3.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"3.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: drain PS delivery work during station teardown\n\nRemoving an AP or mesh station can notify the driver and wake TXQs after\nthe station has already been removed from the driver, and can update\nnum_sta_ps and the power-save queues after station cleanup has purged\nthem.\n\nsta_deliver_ps_frames() tests sta->dead only before it starts delivery. A\nworker that passes that test can be delayed while teardown sets sta->dead\nand removes the station from the driver; when it resumes it still runs the\nfull delivery.\n\nThe existing cancel_work_sync() sits near the end of\n__cleanup_single_sta(), after the final driver state transition and after\nPS accounting and queue purging, so it drains the worker only once the\nstate it has to protect has already changed. Before commit d34ba2168a3c\n(\"mac80211: don't delay station destruction\") cleanup was deferred\nthrough the same ordered workqueue as the delivery work, which kept the\ntwo ordered.\n\nCancel the work after setting sta->dead and before moving the driver\nstate, and move the existing cancellation to the start of\n__cleanup_single_sta(). The first drain closes the driver-lifetime window;\ndriver callbacks during the remaining state transitions can still queue\ndrv_deliver_wk through ieee80211_sta_block_awake(), so retain the second\ndrain at the start of __cleanup_single_sta(). That drain also covers\ninsertion failures, which reach cleanup without setting sta->dead."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:24:16.757Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/843d3a1e6f25027ac85f88f67b95d82c67306dee"},{"url":"https://git.kernel.org/stable/c/772bd89304ecf057cc51ce4ce24a1a96ac9c8de3"},{"url":"https://git.kernel.org/stable/c/097460fcdd8ab9ef6f6018b2fdc29ba0ea499298"},{"url":"https://git.kernel.org/stable/c/67a9e80c3ca20c9044cd6ee72cd6278dd19b5023"}],"title":"wifi: mac80211: drain PS delivery work during station teardown","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98706","datePublished":"2026-10-18T15:46:36.328Z","dateReserved":"2026-09-25T10:25:14.365Z","dateUpdated":"2026-10-19T09:24:16.757Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:17:24","lastModifiedDate":"2026-10-19 10:19:34","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98706","Ordinal":"1","Title":"wifi: mac80211: drain PS delivery work during station teardown","CVE":"CVE-2026-98706","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98706","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: drain PS delivery work during station teardown\n\nRemoving an AP or mesh station can notify the driver and wake TXQs after\nthe station has already been removed from the driver, and can update\nnum_sta_ps and the power-save queues after station cleanup has purged\nthem.\n\nsta_deliver_ps_frames() tests sta->dead only before it starts delivery. A\nworker that passes that test can be delayed while teardown sets sta->dead\nand removes the station from the driver; when it resumes it still runs the\nfull delivery.\n\nThe existing cancel_work_sync() sits near the end of\n__cleanup_single_sta(), after the final driver state transition and after\nPS accounting and queue purging, so it drains the worker only once the\nstate it has to protect has already changed. Before commit d34ba2168a3c\n(\"mac80211: don't delay station destruction\") cleanup was deferred\nthrough the same ordered workqueue as the delivery work, which kept the\ntwo ordered.\n\nCancel the work after setting sta->dead and before moving the driver\nstate, and move the existing cancellation to the start of\n__cleanup_single_sta(). The first drain closes the driver-lifetime window;\ndriver callbacks during the remaining state transitions can still queue\ndrv_deliver_wk through ieee80211_sta_block_awake(), so retain the second\ndrain at the start of __cleanup_single_sta(). That drain also covers\ninsertion failures, which reach cleanup without setting sta->dead.","Type":"Description","Title":"wifi: mac80211: drain PS delivery work during station teardown"}]}}}