{"id":6740,"date":"2026-09-04T18:49:15","date_gmt":"2026-09-04T10:49:15","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-72036"},"modified":"2026-09-04T18:49:15","modified_gmt":"2026-09-04T10:49:15","slug":"cve-2026-72036","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-72036","title":{"rendered":"CVE-2026-72036 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nnet\/sched: sch_multiq"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net\/sched: sch_multiq: Replace direct dequeue call with peek and qdisc_dequeue_peeked<\/p>\n<p>multiq_dequeue() takes a packet from a band&#8217;s child with a direct<br \/>\n-&gt;dequeue() call after multiq_peek() peeked it. When the child is<br \/>\nnon-work-conserving the peek stashes the skb in the child&#8217;s gso_skb, so<br \/>\nthe direct dequeue returns a different skb and orphans the stash,<br \/>\ndesyncing the child&#8217;s qlen\/backlog. With a qfq child reached through a<br \/>\npeeking parent (e.g. tbf) this re-enters the child on an emptied list and<br \/>\ndereferences NULL, panicking the kernel from softirq on ordinary egress.<\/p>\n<p>Take the packet through qdisc_dequeue_peeked(), as sch_prio already does<br \/>\nand as sch_red and sch_sfb were just fixed to do. The helper is a no-op<br \/>\nwhen the child has no stash, so a work-conserving child is unaffected.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net\/sched: sch_multiq: Replace direct dequeue call with peek and qdisc_dequeue_peeked<\/p>\n<p>multiq_dequeue() takes a packet from a band&#8217;<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6740","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6740","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=6740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}