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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Mon, 28 Sep 2026 06:39:52 +0000</lastBuildDate>
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      <title>CVE-2023-52804 — fs/jfs: Add validity check for db_maxag and db_agpref</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2023-52804</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;fs/jfs: Add validity check for db_maxag and db_agpref&lt;/p&gt;
&lt;p&gt;Both db_maxag and db_agpref are used as the index of the
db_agfree array, but there is currently no validity check for
db_maxag and db_agpref, which can lead to errors.&lt;/p&gt;
&lt;p&gt;The following is related bug reported by Syzbot:&lt;/p&gt;
&lt;p&gt;UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:639:20
index 7936 is out of range for type &amp;#39;atomic_t[128]&amp;#39;&lt;/p&gt;
&lt;p&gt;Add checking that the values of db_maxag and db_agpref are valid
indexes for the db_agfree array.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;fs/jfs: Add validity check for db_maxag and db_agpref&lt;/p&gt;
&lt;p&gt;Both db_maxag and db_agpref are used as the index of the
db_agfree array, but there is currently no validity check for
db_maxag and db_agpref, which can lead to errors.&lt;/p&gt;
&lt;p&gt;The following is related bug reported by Syzbot:&lt;/p&gt;
&lt;p&gt;UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:639:20
index 7936 is out of range for type &amp;#39;atomic_t[128]&amp;#39;&lt;/p&gt;
&lt;p&gt;Add checking that the values of db_maxag and db_agpref are valid
indexes for the db_agfree array.&lt;/p&gt;</content:encoded>
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