{"id":41046,"date":"2026-10-19T00:31:55","date_gmt":"2026-10-18T16:31:55","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98574"},"modified":"2026-10-19T00:31:55","modified_gmt":"2026-10-18T16:31:55","slug":"cve-2026-98574","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98574","title":{"rendered":"CVE-2026-98574 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmgenet: stop T"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net: bcmgenet: stop Tx NAPI before disabling the queues<\/p>\n<p>bcmgenet_netif_stop() and the Wake-on-LAN branch of bcmgenet_suspend()<br \/>\nboth disable the Tx queues first and stop Tx NAPI several steps later. A<br \/>\ncompletion in flight calls netif_tx_wake_queue() in between, and nothing<br \/>\nstops the queue again, so a transmit can reach the rings after they have<br \/>\nbeen freed.<\/p>\n<p>Close is safe because dev_deactivate_many() stops the qdisc first.<br \/>\nbcmgenet_suspend() does not, so stop Tx NAPI before the queues on both<br \/>\npaths.<\/p>\n<p>KASAN on a Raspberry Pi CM4, driven from an MTU change because suspend<br \/>\nfreezes user space before the callback runs:<\/p>\n<p>  BUG: KASAN: use-after-free in bcmgenet_xmit+0x17f8\/0x2258<br \/>\n  Write of size 8 at addr ffffff8055844a68 by task ksoftirqd\/0\/14<br \/>\n   bcmgenet_xmit+0x17f8\/0x2258<br \/>\n   dev_hard_start_xmit+0x13c\/0x588<br \/>\n   sch_direct_xmit+0x108\/0x340<br \/>\n   __dev_queue_xmit+0x1190\/0x3848<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net: bcmgenet: stop Tx NAPI before disabling the queues<\/p>\n<p>bcmgenet_netif_stop() and the Wake-on-LAN branch of bcmgenet_suspend()<br \/>\nbot<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-41046","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/41046","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=41046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}