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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Tue, 29 Sep 2026 21:31:24 +0000</lastBuildDate>
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      <title>CVE-2026-31589 — mm: call -&gt;free_folio() directly in folio_unmap_invalidate()</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-31589</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;mm: call -&amp;gt;free_folio() directly in folio_unmap_invalidate()&lt;/p&gt;
&lt;p&gt;We can only call filemap_free_folio() if we have a reference to (or hold a
lock on) the mapping.  Otherwise, we&amp;#39;ve already removed the folio from the
mapping so it no longer pins the mapping and the mapping can be removed,
causing a use-after-free when accessing mapping-&amp;gt;a_ops.&lt;/p&gt;
&lt;p&gt;Follow the same pattern as __remove_mapping() and load the free_folio
function pointer before dropping the lock on the mapping.  That lets us
make filemap_free_folio() static as this was the only caller outside
filemap.c.&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;mm: call -&amp;gt;free_folio() directly in folio_unmap_invalidate()&lt;/p&gt;
&lt;p&gt;We can only call filemap_free_folio() if we have a reference to (or hold a
lock on) the mapping.  Otherwise, we&amp;#39;ve already removed the folio from the
mapping so it no longer pins the mapping and the mapping can be removed,
causing a use-after-free when accessing mapping-&amp;gt;a_ops.&lt;/p&gt;
&lt;p&gt;Follow the same pattern as __remove_mapping() and load the free_folio
function pointer before dropping the lock on the mapping.  That lets us
make filemap_free_folio() static as this was the only caller outside
filemap.c.&lt;/p&gt;</content:encoded>
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