{"id":25475,"date":"2026-09-18T04:31:26","date_gmt":"2026-09-17T20:31:26","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-90066"},"modified":"2026-09-18T04:31:26","modified_gmt":"2026-09-17T20:31:26","slug":"cve-2026-90066","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-90066","title":{"rendered":"CVE-2026-90066 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nsamples\/ftrace: Fix k"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>samples\/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify<\/p>\n<p>ftrace_direct_multi_init() assigns kthread_run()&#8217;s return value to<br \/>\nsimple_tsk without an IS_ERR() check. When kthread_run() fails it<br \/>\nreturns ERR_PTR(-ENOMEM), but init still returns 0, so the module loads<br \/>\nwith simple_tsk holding an error pointer. On unload,<br \/>\nftrace_direct_multi_exit() then passes that ERR_PTR to kthread_stop(),<br \/>\nleading to a null-pointer-dereference.<\/p>\n<p>Check the return value of kthread_run() with IS_ERR(); on failure,<br \/>\nunregister the ftrace direct call and propagate the error code.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>samples\/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify<\/p>\n<p>ftrace_direct_multi_init() assigns kthread_run()&#8217;s ret<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25475","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25475","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=25475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}