In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: mac80211: shut down RX BA session timer on teardown<\/p>\n
Tearing 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.<\/p>\n
An 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.<\/p>\n
Use 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.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: mac80211: shut down RX BA session timer on teardown<\/p>\n
Tearing down an RX BA session can leave the session timer queued on a
\nfr<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-41179","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/41179","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=41179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}