In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
bpf: Fix potential UAF when reading bpf link info<\/p>\n
In bpf_link_show_fdinfo and bpf_link_get_info_by_fd, link->prog is
\naccessed without holding any locks. If the prog is concurrently replaced
\nvia bpf_link_update, the old prog can be freed, leading to a potential
\nUAF issue.<\/p>\n
Fix this by accessing link->prog under RCU protection to safely fetch
\nthe pointer and guarantee its lifetime while reading its fields.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
bpf: Fix potential UAF when reading bpf link info<\/p>\n
In bpf_link_show_fdinfo and bpf_link_get_info_by_fd, link->prog is
\naccessed with<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25801","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25801","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=25801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}