{"id":21605,"date":"2026-09-12T04:31:24","date_gmt":"2026-09-11T20:31:24","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89683"},"modified":"2026-09-12T04:31:24","modified_gmt":"2026-09-11T20:31:24","slug":"cve-2026-89683","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89683","title":{"rendered":"CVE-2026-89683 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: fix dentry ref"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>nfsd: fix dentry ref leak on V4ROOT export filehandle lookup<\/p>\n<p>nfsd_set_fh_dentry() leaks the dentry reference from<br \/>\nexportfs_decode_fh_raw() when the NFS3_FHSIZE or NFS_FHSIZE<br \/>\nswitch cases detect NFSEXP_V4ROOT and goto out. The out: label<br \/>\ncalls exp_put() but never dput(dentry), and fhp-&gt;fh_dentry was<br \/>\nnever assigned so fh_put() cannot compensate.<\/p>\n<p>A crafted NFSv3 filehandle targeting a V4ROOT export&#8217;s fsid<br \/>\ntriggers the leak on every request.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>nfsd: fix dentry ref leak on V4ROOT export filehandle lookup<\/p>\n<p>nfsd_set_fh_dentry() leaks the dentry reference from<br \/>\nexportfs_decode_<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21605","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21605","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=21605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21605"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}