{"id":15055,"date":"2026-09-04T19:02:23","date_gmt":"2026-09-04T11:02:23","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-64075"},"modified":"2026-09-04T19:02:23","modified_gmt":"2026-09-04T11:02:23","slug":"cve-2026-64075","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-64075","title":{"rendered":"CVE-2026-64075 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nfprobe: Fix unregiste"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>fprobe: Fix unregister_fprobe() to wait for RCU grace period<\/p>\n<p>Commit 4346ba1604093 (&#8220;fprobe: Rewrite fprobe on function-graph tracer&#8221;)<br \/>\nchanged fprobe to register struct fprobe to an rcu-hlist, but it forgot<br \/>\nto wait for RCU GP. Thus there can be use-after-free if the fprobe is<br \/>\nreleased right after unregistering. This can be happened on fprobe<br \/>\nevent and sample module code.<\/p>\n<p>To fix this issue, add synchronize_rcu() in unregister_fprobe().<\/p>\n<p>Note that BPF is OK because fprobe is used as a part of<br \/>\nbpf_kprobe_multi_link. This unregisters its fprobe in<br \/>\nbpf_kprobe_multi_link_release() and it is deallocated via<br \/>\nbpf_kprobe_multi_link_dealloc(), which is invoked from<br \/>\nbpf_link_defer_dealloc_rcu_gp() RCU callback.<\/p>\n<p>For BPF, this also introduced unregister_fprobe_async() which does<br \/>\nNOT wait for RCU grace priod.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>fprobe: Fix unregister_fprobe() to wait for RCU grace period<\/p>\n<p>Commit 4346ba1604093 (&#8220;fprobe: Rewrite fprobe on function-graph trace<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-15055","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/15055","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=15055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}