In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
kprobes: Protect kprobe_blacklist with RCU<\/p>\n
__within_kprobe_blacklist() traverses kprobe_blacklist without holding
\nkprobe_mutex. When a module is unloaded, kprobe_remove_area_blacklist()
\nremoves blacklist entries and immediately frees them with kfree().
\nA concurrent call to within_kprobe_blacklist() can therefore dereference
\nfreed memory.<\/p>\n
Furthermore, within_kprobe_blacklist() can be called in atomic or
\nnon-preemptible contexts where the sleeping kprobe_mutex cannot be taken.<\/p>\n
Protect kprobe_blacklist with RCU. Use guard(rcu)() and
\nlist_for_each_entry_rcu() for traversal, list_add_tail_rcu() for
\ninsertions, list_del_rcu() for deletions, and kfree_rcu() to reclaim
\nentries safely after a grace period.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
kprobes: Protect kprobe_blacklist with RCU<\/p>\n
__within_kprobe_blacklist() traverses kprobe_blacklist without holding
\nkprobe_mutex. Wh<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-24675","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/24675","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=24675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}