{"id":39093,"date":"2026-10-16T00:35:01","date_gmt":"2026-10-15T16:35:01","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98422"},"modified":"2026-10-16T00:35:01","modified_gmt":"2026-10-15T16:35:01","slug":"cve-2026-98422","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98422","title":{"rendered":"CVE-2026-98422 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reset"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>wifi: mac80211: reset the AP_VLAN tailroom counter on ifdown<\/p>\n<p>On ifup, AP_VLAN interfaces get crypto_tx_tailroom_needed_cnt from<br \/>\nthe AP interface, but it&#8217;s never decremented again unless the AP is<br \/>\nalso brought down. Thus, bringing the same AP_VLAN up again will<br \/>\nincrement the counter again and eventually hit the sanity check:<\/p>\n<p>  WARN_ON_ONCE(sdata-&gt;crypto_tx_tailroom_needed_cnt !=<br \/>\n               master-&gt;crypto_tx_tailroom_needed_cnt);<\/p>\n<p>Reset it on ifdown to avoid that.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>wifi: mac80211: reset the AP_VLAN tailroom counter on ifdown<\/p>\n<p>On ifup, AP_VLAN interfaces get crypto_tx_tailroom_needed_cnt from<br \/>\nth<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-39093","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/39093","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=39093"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=39093"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=39093"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}