{"id":"AZL-108690","summary":"CVE-2026-98707 affecting package kernel 6.6.157.1-1","details":"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.","modified":"2026-10-19T14:16:49.229738760Z","published":"2026-10-18T16:17:24Z","upstream":["CVE-2026-98707"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98707"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.157.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-108690.json"}}],"schema_version":"1.9.0"}