{"id":21534,"date":"2026-09-12T04:31:19","date_gmt":"2026-09-11T20:31:19","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89612"},"modified":"2026-09-12T04:31:19","modified_gmt":"2026-09-11T20:31:19","slug":"cve-2026-89612","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89612","title":{"rendered":"CVE-2026-89612 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: reject invalid"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ntfs: reject invalid MFT LCNs from boot sector<\/p>\n<p>The NTFS boot sector stores the MFT and MFTMirr locations as unsigned<br \/>\n64-bit LCNs, but parse_ntfs_boot_sector() decoded them into an s64.<\/p>\n<p>A crafted high-bit value could therefore become negative and pass<br \/>\nthe existing upper-bound check. The invalid value then propagated into<br \/>\nthe MFT zone allocator and could result in an out-of-bounds access to<br \/>\nlcn_empty_bits_per_page.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ntfs: reject invalid MFT LCNs from boot sector<\/p>\n<p>The NTFS boot sector stores the MFT and MFTMirr locations as unsigned<br \/>\n64-bit LCNs, <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21534","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21534","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=21534"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21534"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21534"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}