{"api_version":"1","generated_at":"2026-10-21T13:17:19+00:00","cve":"CVE-2026-98707","urls":{"html":"https://cve.report/CVE-2026-98707","api":"https://cve.report/api/cve/CVE-2026-98707.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98707","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98707"},"summary":{"title":"wifi: mac80211: shut down RX BA session timer on teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: shut down RX BA session timer on teardown\n\nTearing down an RX BA session can leave the session timer queued on a\nfreed tid_rx. Later timer-wheel processing and the timer callback itself\nthen run against freed memory.\n\nAn RX BAR handler can dereference tid_rx under RCU before teardown\nunpublishes it and stay in its read-side critical section while teardown\ndeletes the session timer. The stale handler can then rearm the timer\nafter timer_delete_sync() returns and before the RCU callback frees\ntid_rx.\n\nUse timer_shutdown_sync() so rearm attempts become ineffective once\nteardown starts. Keep reorder_timer unchanged: teardown marks the session\nremoved under reorder_lock and its release path checks that state before\nrearming. session_timer has no equivalent guard because\nieee80211_rx_h_ctrl() rearms it before taking reorder_lock.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:17:24","updated_at":"2026-10-19 10:19:35"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/481f9230284c27052b59c587069f232c5d84779e","name":"https://git.kernel.org/stable/c/481f9230284c27052b59c587069f232c5d84779e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e588e83e5c7a0f6d7a77dbbb58927c8c8cfd598e","name":"https://git.kernel.org/stable/c/e588e83e5c7a0f6d7a77dbbb58927c8c8cfd598e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/09b7d5e4f88504e62ddf4ff31ebeebb3b87578ba","name":"https://git.kernel.org/stable/c/09b7d5e4f88504e62ddf4ff31ebeebb3b87578ba","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7bb2a5bd4f07192fca35644fab7d49a17bfbc861","name":"https://git.kernel.org/stable/c/7bb2a5bd4f07192fca35644fab7d49a17bfbc861","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98707","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98707","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a87f736d942c86255e3088c606f0e3eab6bbf784 7bb2a5bd4f07192fca35644fab7d49a17bfbc861 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a87f736d942c86255e3088c606f0e3eab6bbf784 481f9230284c27052b59c587069f232c5d84779e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a87f736d942c86255e3088c606f0e3eab6bbf784 09b7d5e4f88504e62ddf4ff31ebeebb3b87578ba git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a87f736d942c86255e3088c606f0e3eab6bbf784 e588e83e5c7a0f6d7a77dbbb58927c8c8cfd598e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.36","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.36 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/agg-rx.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7bb2a5bd4f07192fca35644fab7d49a17bfbc861","status":"affected","version":"a87f736d942c86255e3088c606f0e3eab6bbf784","versionType":"git"},{"lessThan":"481f9230284c27052b59c587069f232c5d84779e","status":"affected","version":"a87f736d942c86255e3088c606f0e3eab6bbf784","versionType":"git"},{"lessThan":"09b7d5e4f88504e62ddf4ff31ebeebb3b87578ba","status":"affected","version":"a87f736d942c86255e3088c606f0e3eab6bbf784","versionType":"git"},{"lessThan":"e588e83e5c7a0f6d7a77dbbb58927c8c8cfd598e","status":"affected","version":"a87f736d942c86255e3088c606f0e3eab6bbf784","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/mac80211/agg-rx.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.36"},{"lessThan":"2.6.36","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":"2.6.36","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.56","versionStartIncluding":"2.6.36","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.10","versionStartIncluding":"2.6.36","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"2.6.36","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: shut down RX BA session timer on teardown\n\nTearing down an RX BA session can leave the session timer queued on a\nfreed tid_rx. Later timer-wheel processing and the timer callback itself\nthen run against freed memory.\n\nAn RX BAR handler can dereference tid_rx under RCU before teardown\nunpublishes it and stay in its read-side critical section while teardown\ndeletes the session timer. The stale handler can then rearm the timer\nafter timer_delete_sync() returns and before the RCU callback frees\ntid_rx.\n\nUse timer_shutdown_sync() so rearm attempts become ineffective once\nteardown starts. Keep reorder_timer unchanged: teardown marks the session\nremoved under reorder_lock and its release path checks that state before\nrearming. session_timer has no equivalent guard because\nieee80211_rx_h_ctrl() rearms it before taking reorder_lock."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:24:18.093Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/7bb2a5bd4f07192fca35644fab7d49a17bfbc861"},{"url":"https://git.kernel.org/stable/c/481f9230284c27052b59c587069f232c5d84779e"},{"url":"https://git.kernel.org/stable/c/09b7d5e4f88504e62ddf4ff31ebeebb3b87578ba"},{"url":"https://git.kernel.org/stable/c/e588e83e5c7a0f6d7a77dbbb58927c8c8cfd598e"}],"title":"wifi: mac80211: shut down RX BA session timer on teardown","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98707","datePublished":"2026-10-18T15:46:37.587Z","dateReserved":"2026-09-25T10:25:14.365Z","dateUpdated":"2026-10-19T09:24:18.093Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:17:24","lastModifiedDate":"2026-10-19 10:19:35","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98707","Ordinal":"1","Title":"wifi: mac80211: shut down RX BA session timer on teardown","CVE":"CVE-2026-98707","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98707","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: shut down RX BA session timer on teardown\n\nTearing down an RX BA session can leave the session timer queued on a\nfreed tid_rx. Later timer-wheel processing and the timer callback itself\nthen run against freed memory.\n\nAn RX BAR handler can dereference tid_rx under RCU before teardown\nunpublishes it and stay in its read-side critical section while teardown\ndeletes the session timer. The stale handler can then rearm the timer\nafter timer_delete_sync() returns and before the RCU callback frees\ntid_rx.\n\nUse timer_shutdown_sync() so rearm attempts become ineffective once\nteardown starts. Keep reorder_timer unchanged: teardown marks the session\nremoved under reorder_lock and its release path checks that state before\nrearming. session_timer has no equivalent guard because\nieee80211_rx_h_ctrl() rearms it before taking reorder_lock.","Type":"Description","Title":"wifi: mac80211: shut down RX BA session timer on teardown"}]}}}