In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ovpn: fix use after free in unlock_ovpn()<\/p>\n
unlock_ovpn() iterates over the release_list using llist_for_each_entry()
\nand drops the peer reference inside the loop body via ovpn_peer_put().<\/p>\n
If this drops the last reference, the peer is eventually freed. However,
\nllist_for_each_entry() reads peer->release_entry.next in the loop advance
\nexpression, which runs after the body. By that time the peer may have
\nalready been freed, resulting in a use after free when advancing to the
\nnext list entry.<\/p>\n
Fix this by using llist_for_each_entry_safe(), which caches the next
\npointer before executing the loop body.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ovpn: fix use after free in unlock_ovpn()<\/p>\n
unlock_ovpn() iterates over the release_list using llist_for_each_entry()
\nand drops the <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-5432","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/5432","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=5432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}