{"id":21623,"date":"2026-09-12T04:31:26","date_gmt":"2026-09-11T20:31:26","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89701"},"modified":"2026-09-12T04:31:26","modified_gmt":"2026-09-11T20:31:26","slug":"cve-2026-89701","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89701","title":{"rendered":"CVE-2026-89701 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: validate nsecon"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>nfsd: validate nseconds in TIME_DELEG decode paths<\/p>\n<p>The xdrgen-based TIME_DELEG_ACCESS and TIME_DELEG_MODIFY decode arms<br \/>\nstore a raw uint32_t nseconds directly into tv_nsec without enforcing<br \/>\nnseconds &lt; NSEC_PER_SEC. The legacy nfsd4_decode_nfstime4 has this<br \/>\ncheck but the TIME_DELEG paths do not. A malformed timespec can<br \/>\npropagate through notify_change() to disk.<\/p>\n<p>Add range checks in both nfs4xdr.c (SETATTR path) and<br \/>\nnfs4callback.c (CB_GETATTR path).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>nfsd: validate nseconds in TIME_DELEG decode paths<\/p>\n<p>The xdrgen-based TIME_DELEG_ACCESS and TIME_DELEG_MODIFY decode arms<br \/>\nstore a ra<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21623","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21623","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=21623"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21623"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}