{"id":21343,"date":"2026-09-12T04:31:03","date_gmt":"2026-09-11T20:31:03","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-81010"},"modified":"2026-09-12T04:31:03","modified_gmt":"2026-09-11T20:31:03","slug":"cve-2026-81010","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-81010","title":{"rendered":"CVE-2026-81010 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring\/waitid: hono"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>io_uring\/waitid: honor task_work cancellation<\/p>\n<p>io_waitid_cb() may run through the fallback task_work path when<br \/>\ntask_work_add() can no longer queue work to the originating task. The<br \/>\nfallback runs from a kworker and io_uring marks such task work as<br \/>\ncanceled through tw.cancel.<\/p>\n<p>io_waitid_cb() currently ignores tw.cancel and calls __do_wait().<br \/>\nwaitid is task-context dependent: __do_wait() performs child lookup<br \/>\nrelative to current, and the retry path also uses<br \/>\ncurrent-&gt;signal-&gt;wait_chldexit. If the callback runs from the fallback<br \/>\nkworker, current is therefore not the task that submitted the request.<\/p>\n<p>Honor tw.cancel before entering __do_wait(). Complete the request with<br \/>\n-ECANCELED and skip the siginfo copy, since canceled task work may run<br \/>\nwithout the submitting task&#8217;s userspace execution context.<\/p>\n<p>Keep the existing siginfo handling for normal waitid completion and<br \/>\nexplicit cancellation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>io_uring\/waitid: honor task_work cancellation<\/p>\n<p>io_waitid_cb() may run through the fallback task_work path when<br \/>\ntask_work_add() can <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21343","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21343","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=21343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}