{"id":7458,"date":"2026-09-04T18:49:33","date_gmt":"2026-09-04T10:49:33","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74471"},"modified":"2026-09-04T18:49:33","modified_gmt":"2026-09-04T10:49:33","slug":"cve-2026-74471","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74471","title":{"rendered":"CVE-2026-74471 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Check return"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tracing: Check return value of __register_event() in trace_module_add_events()<\/p>\n<p>trace_module_add_events() ignores the return value of __register_event()<br \/>\nand unconditionally calls __add_event_to_tracers() for each event.<\/p>\n<p>If __register_event() fails (for example, if event_init() fails), the<br \/>\ntrace_event_call is not added to ftrace_events list, but<br \/>\n__add_event_to_tracers() still creates a trace_event_file pointing to it.<br \/>\nIf module loading subsequently fails and module memory is freed, tracing<br \/>\nstate retains a stale trace_event_call pointer in trace_event_file,<br \/>\nleading to a use-after-free when tracefs or tracing subsystem operations<br \/>\nare later executed.<\/p>\n<p>Fix this by checking the return value of __register_event() and only<br \/>\ncalling __add_event_to_tracers() if event registration succeeded.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tracing: Check return value of __register_event() in trace_module_add_events()<\/p>\n<p>trace_module_add_events() ignores the return value <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-7458","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/7458","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=7458"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7458"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7458"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}