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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 23:33:05 +0000</lastBuildDate>
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      <title>CVE-2023-53867 — ceph: fix potential use-after-free bug when trimming caps</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2023-53867</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;ceph: fix potential use-after-free bug when trimming caps&lt;/p&gt;
&lt;p&gt;When trimming the caps and just after the &amp;#39;session-&amp;gt;s_cap_lock&amp;#39; is
released in ceph_iterate_session_caps() the cap maybe removed by
another thread, and when using the stale cap memory in the callbacks
it will trigger use-after-free crash.&lt;/p&gt;
&lt;p&gt;We need to check the existence of the cap just after the &amp;#39;ci-&amp;gt;i_ceph_lock&amp;#39;
being acquired. And do nothing if it&amp;#39;s already removed.&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;ceph: fix potential use-after-free bug when trimming caps&lt;/p&gt;
&lt;p&gt;When trimming the caps and just after the &amp;#39;session-&amp;gt;s_cap_lock&amp;#39; is
released in ceph_iterate_session_caps() the cap maybe removed by
another thread, and when using the stale cap memory in the callbacks
it will trigger use-after-free crash.&lt;/p&gt;
&lt;p&gt;We need to check the existence of the cap just after the &amp;#39;ci-&amp;gt;i_ceph_lock&amp;#39;
being acquired. And do nothing if it&amp;#39;s already removed.&lt;/p&gt;</content:encoded>
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