In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
selinux: reject an unclaimed class value in security_get_classes()<\/p>\n
security_get_classes() sizes an array by p_classes.nprim and fills it at
\nvalue – 1, so a class value the policy never defines leaves a NULL.
\nsel_make_classes() passes every entry to sel_make_dir(), reaching the same
\nd_alloc_name() dereference as the permission array. The class symbol table
\nis allowed to be sparse (policydb_class_isvalid() exists to absorb that),
\nbut this getter builds its own array straight from the hash table and has
\nno such predicate.<\/p>\n
Fail the lookup when a value went unclaimed instead of handing out the
\nNULL. Conforming policies define every class they declare and are
\nunaffected.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
selinux: reject an unclaimed class value in security_get_classes()<\/p>\n
security_get_classes() sizes an array by p_classes.nprim and fi<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-17492","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/17492","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=17492"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17492"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17492"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}