{"id":21671,"date":"2026-09-12T04:31:30","date_gmt":"2026-09-11T20:31:30","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89749"},"modified":"2026-09-12T04:31:30","modified_gmt":"2026-09-11T20:31:30","slug":"cve-2026-89749","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89749","title":{"rendered":"CVE-2026-89749 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix crash pa"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tracing: Fix crash passing ERR_PTR to kthread_stop()<\/p>\n<p>event_test_stuff() calls kthread_run() and unconditionally passes the<br \/>\nreturned task_struct pointer to kthread_stop(). kthread_run() returns an<br \/>\nerror pointer such as ERR_PTR(-ENOMEM) when kthread creation fails, for<br \/>\nexample under memory pressure during the boot-time event self-test.<br \/>\nkthread_stop() then dereferences the invalid pointer, crashing the kernel.<\/p>\n<p>Check the result of kthread_run() before passing it to kthread_stop(). Use<br \/>\nWARN_ON() so that a failure to create the self-test thread does not go<br \/>\nunnoticed, matching the ring-buffer self-test fix in commit<br \/>\n91542863abad (&#8220;ring-buffer: Fix crash passing ERR_PTR to kthread_stop()&#8221;).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tracing: Fix crash passing ERR_PTR to kthread_stop()<\/p>\n<p>event_test_stuff() calls kthread_run() and unconditionally passes the<br \/>\nreturne<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21671","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21671","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=21671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}