{"id":21590,"date":"2026-09-12T04:31:23","date_gmt":"2026-09-11T20:31:23","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89668"},"modified":"2026-09-12T04:31:23","modified_gmt":"2026-09-11T20:31:23","slug":"cve-2026-89668","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89668","title":{"rendered":"CVE-2026-89668 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: move nfsd_debug"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>nfsd: move nfsd_debugfs_init() after nfsd4_init_slabs() in init_nfsd()<\/p>\n<p>nfsd_debugfs_init() runs before nfsd4_init_slabs() in init_nfsd().<br \/>\nIf the slab allocation fails, the bare &#8220;return retval&#8221; bypasses<br \/>\nnfsd_debugfs_exit(), leaving orphan debugfs files with stale fops<br \/>\npointers into the freed module text.<\/p>\n<p>Move nfsd_debugfs_init() to after the slab init succeeds, so the<br \/>\nearly return has no debugfs state to clean up.<\/p>\n<p>Since debugfs is now the more recently initialized of the two, also<br \/>\nupdate the unwind paths to match reverse-initialization (LIFO) order:<br \/>\nrun nfsd_debugfs_exit() before nfsd4_free_slabs() in both the<br \/>\ninit_nfsd() error path and exit_nfsd(). The nfsd debugfs files only<br \/>\nreference module-global state and have no dependency on the slab<br \/>\ncaches, so that reordering is a cleanup with no functional change.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>nfsd: move nfsd_debugfs_init() after nfsd4_init_slabs() in init_nfsd()<\/p>\n<p>nfsd_debugfs_init() runs before nfsd4_init_slabs() in init_<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21590","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21590","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=21590"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21590"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}