https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 16:54:30 +0000 https://vulnerability.circl.lu/vuln/cve-2026-72225 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit()</p> <p>jbd2_journal_initialize_fast_commit() validates journal capacity by checking (journal-&gt;j_last - num_fc_blks &lt; JBD2_MIN_JOURNAL_BLOCKS). Both j_last and num_fc_blks are unsigned, so when num_fc_blks exceeds j_last the subtraction wraps to a large value, bypassing the bounds check.</p> <p>The resulting underflow corrupts j_last, j_fc_first, and j_free, leading to journal abort.</p> <p>Fix by checking num_fc_blks against j_last before the subtraction, returning -EFSCORRUPTED.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit()</p> <p>jbd2_journal_initialize_fast_commit() validates journal capacity by checking (journal-&gt;j_last - num_fc_blks &lt; JBD2_MIN_JOURNAL_BLOCKS). Both j_last and num_fc_blks are unsigned, so when num_fc_blks exceeds j_last the subtraction wraps to a large value, bypassing the bounds check.</p> <p>The resulting underflow corrupts j_last, j_fc_first, and j_free, leading to journal abort.</p> <p>Fix by checking num_fc_blks against j_last before the subtraction, returning -EFSCORRUPTED.</p> https://vulnerability.circl.lu/vuln/cve-2026-72225