In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
batman-adv: mcast: fix use-after-free in orig_node RCU release<\/p>\n
batadv_mcast_purge_orig() removes entries from RCU-protected hlists but
\ndoes not wait for an RCU grace period before returning. Concurrent RCU
\nreaders may still accesses references to those entries at the point of
\nremoval. RCU-protected readers trying to operate on entries like
\norig->mcast_want_all_ipv6_node will then access already freed memory.<\/p>\n
Fix this by moving batadv_mcast_purge_orig() to batadv_orig_node_release(),
\njust before the call_rcu() invocation. This ensures RCU readers that were
\nactive at purge time have drained before the orig_node memory is reclaimed.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
batman-adv: mcast: fix use-after-free in orig_node RCU release<\/p>\n
batadv_mcast_purge_orig() removes entries from RCU-protected hlists<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-15070","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/15070","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=15070"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15070"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}