{"id":6847,"date":"2026-09-04T18:49:19","date_gmt":"2026-09-04T10:49:19","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-72225"},"modified":"2026-09-04T18:49:19","modified_gmt":"2026-09-04T10:49:19","slug":"cve-2026-72225","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-72225","title":{"rendered":"CVE-2026-72225 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: fix integer und"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit()<\/p>\n<p>jbd2_journal_initialize_fast_commit() validates journal capacity by<br \/>\nchecking (journal-&gt;j_last &#8211; num_fc_blks &lt; JBD2_MIN_JOURNAL_BLOCKS).<br \/>\nBoth j_last and num_fc_blks are unsigned, so when num_fc_blks exceeds<br \/>\nj_last the subtraction wraps to a large value, bypassing the bounds<br \/>\ncheck.<\/p>\n<p>The resulting underflow corrupts j_last, j_fc_first, and j_free,<br \/>\nleading to journal abort.<\/p>\n<p>Fix by checking num_fc_blks against j_last before the subtraction,<br \/>\nreturning -EFSCORRUPTED.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit()<\/p>\n<p>jbd2_journal_initialize_fast_commit() validates journal capac<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6847","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6847","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=6847"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6847"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6847"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}