{"id":5322,"date":"2026-09-04T18:47:45","date_gmt":"2026-09-04T10:47:45","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68097"},"modified":"2026-09-04T18:47:45","modified_gmt":"2026-09-04T10:47:45","slug":"cve-2026-68097","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68097","title":{"rendered":"CVE-2026-68097 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: validate ACE s"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ksmbd: validate ACE size against SID sub-authorities<\/p>\n<p>set_ntacl_dacl() validates sid.num_subauth before copying an ACE, but<br \/>\ndoes not verify that the declared ACE size contains all sub-authorities<br \/>\ndescribed by that field. An undersized ACE can therefore be copied<br \/>\nand later make the POSIX ACL deduplication walk inspect data beyond<br \/>\nthe copied ACE boundary.<\/p>\n<p>The existing initial bound check is also too small. It only ensures<br \/>\nthat the ACE size field is accessible before set_ntacl_dacl() reads<br \/>\nsid.num_subauth farther into the input buffer.<\/p>\n<p>Require enough input for the fixed SID header before accessing<br \/>\nnum_subauth, reject ACEs smaller than that header, and skip ACEs<br \/>\nwhose declared size cannot contain the complete SID. This makes the<br \/>\nvalidation consistent with the other ACE walk paths.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ksmbd: validate ACE size against SID sub-authorities<\/p>\n<p>set_ntacl_dacl() validates sid.num_subauth before copying an ACE, but<br \/>\ndoes no<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-5322","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/5322","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=5322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}