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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Wed, 30 Sep 2026 23:33:43 +0000</lastBuildDate>
    <item>
      <title>CVE-2023-52480 — ksmbd: fix race condition between session lookup and expire</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2023-52480</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;ksmbd: fix race condition between session lookup and expire&lt;/p&gt;
&lt;p&gt;Thread A                        +  Thread B
 ksmbd_session_lookup            |  smb2_sess_setup
   sess = xa_load                |
                                 |
                                 |    xa_erase(&amp;amp;conn-&amp;gt;sessions, sess-&amp;gt;id);
                                 |
                                 |    ksmbd_session_destroy(sess) --&amp;gt; kfree(sess)
                                 |
   // UAF!                       |
   sess-&amp;gt;last_active = jiffies   |
                                 +&lt;/p&gt;
&lt;p&gt;This patch add rwsem to fix race condition between ksmbd_session_lookup
and ksmbd_expire_session.&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;ksmbd: fix race condition between session lookup and expire&lt;/p&gt;
&lt;p&gt;Thread A                        +  Thread B
 ksmbd_session_lookup            |  smb2_sess_setup
   sess = xa_load                |
                                 |
                                 |    xa_erase(&amp;amp;conn-&amp;gt;sessions, sess-&amp;gt;id);
                                 |
                                 |    ksmbd_session_destroy(sess) --&amp;gt; kfree(sess)
                                 |
   // UAF!                       |
   sess-&amp;gt;last_active = jiffies   |
                                 +&lt;/p&gt;
&lt;p&gt;This patch add rwsem to fix race condition between ksmbd_session_lookup
and ksmbd_expire_session.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2023-52480</guid>
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