{"id":11248,"date":"2026-09-04T18:53:06","date_gmt":"2026-09-04T10:53:06","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74661"},"modified":"2026-09-04T18:53:06","modified_gmt":"2026-09-04T10:53:06","slug":"cve-2026-74661","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74661","title":{"rendered":"CVE-2026-74661 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nmac802154: fix netdev"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>mac802154: fix netdev use-after-free in beacon worker<\/p>\n<p>mac802154_beacon_worker() reads local-&gt;beacon_req under RCU and derives<br \/>\nthe sub-interface from the request, but then drops the RCU read lock and<br \/>\ncontinues to use both sdata and the embedded wpan_dev.<\/p>\n<p>mac802154_stop_beacons_locked() cancels only pending beacon work, clears<br \/>\nlocal-&gt;beacon_req and frees the request.  A beacon worker that is already<br \/>\nrunning can therefore continue after interface teardown and dereference<br \/>\nthe freed netdev private area.<\/p>\n<p>The scan worker already pins the netdev before leaving RCU.  Apply the<br \/>\nsame lifetime rule to the beacon worker: take a netdev reference while<br \/>\nthe request is still protected by RCU, and release it on all paths that<br \/>\ncontinue after the reference is acquired.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>mac802154: fix netdev use-after-free in beacon worker<\/p>\n<p>mac802154_beacon_worker() reads local-&gt;beacon_req under RCU and derives<br \/>\nthe <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-11248","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/11248","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=11248"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11248"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}