In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
bpf: Preserve unique-field state across nested structs<\/p>\n
btf_find_struct_field() initializes a fresh seen mask for every recursive
\ndescent. Unique special fields in different levels of the same aggregate
\ntherefore do not see one another. The duplicate fields can reach
\nbtf_parse_fields(), where they trigger an invariant WARN_ON_ONCE(). A
\ncrafted user BTF can consequently trigger the warning before map creation
\nchecks capabilities.<\/p>\n
Initialize the seen mask once in btf_find_field() and pass the same pointer
\nthrough struct, datasec, and nested-struct walks. This gives the entire field
\ntraversal one shared uniqueness state.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
bpf: Preserve unique-field state across nested structs<\/p>\n
btf_find_struct_field() initializes a fresh seen mask for every recursive
\nd<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25884","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25884","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=25884"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25884"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25884"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}