{"id":40915,"date":"2026-10-19T00:31:33","date_gmt":"2026-10-18T16:31:33","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98443"},"modified":"2026-10-19T00:31:33","modified_gmt":"2026-10-18T16:31:33","slug":"cve-2026-98443","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98443","title":{"rendered":"CVE-2026-98443 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: fix cursor and p"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>xfs: fix cursor and pointer handling when recovering iunlink buckets<\/p>\n<p>LOLLM pointed out a bug in xlog_recover_iunlink_bucket:<\/p>\n<p>1. We don&#8217;t null out prev_ip after releasing it, which can lead to UAF<br \/>\n   problems if the inodegc flush call in the loop fails.<\/p>\n<p>at which point I noticed even more bugs:<\/p>\n<p>2. If the inodegc flush inside the loop fails, we also leak @ip.<\/p>\n<p>3. We set prev_agino to agino having already advanced agino, which<br \/>\n   results in inodes with i_prev_unlinked set to itself.<\/p>\n<p>4. If we exit the bottom of the loop with prev_ip set, then prev_ip<br \/>\n   aliases ip and we also set its i_prev_unlinked to itself.<\/p>\n<p>Bugs 3 and 4 introduce loops into the unlinked list, though these loops<br \/>\ndon&#8217;t surface because we immediately flush each unlinked inode after<br \/>\nloading it.<\/p>\n<p>Fix all of these issues.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>xfs: fix cursor and pointer handling when recovering iunlink buckets<\/p>\n<p>LOLLM pointed out a bug in xlog_recover_iunlink_bucket:<\/p>\n<p>1. W<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-40915","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/40915","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=40915"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=40915"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=40915"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}