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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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      <title>CVE-2024-39293 — Revert "xsk: Support redirect to any socket bound to the same umem"</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2024-39293</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;Revert &amp;#34;xsk: Support redirect to any socket bound to the same umem&amp;#34;&lt;/p&gt;
&lt;p&gt;This reverts commit 2863d665ea41282379f108e4da6c8a2366ba66db.&lt;/p&gt;
&lt;p&gt;This patch introduced a potential kernel crash when multiple napi instances
redirect to the same AF_XDP socket. By removing the queue_index check, it is
possible for multiple napi instances to access the Rx ring at the same time,
which will result in a corrupted ring state which can lead to a crash when
flushing the rings in __xsk_flush(). This can happen when the linked list of
sockets to flush gets corrupted by concurrent accesses. A quick and small fix
is not possible, so let us revert this for now.&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;Revert &amp;#34;xsk: Support redirect to any socket bound to the same umem&amp;#34;&lt;/p&gt;
&lt;p&gt;This reverts commit 2863d665ea41282379f108e4da6c8a2366ba66db.&lt;/p&gt;
&lt;p&gt;This patch introduced a potential kernel crash when multiple napi instances
redirect to the same AF_XDP socket. By removing the queue_index check, it is
possible for multiple napi instances to access the Rx ring at the same time,
which will result in a corrupted ring state which can lead to a crash when
flushing the rings in __xsk_flush(). This can happen when the linked list of
sockets to flush gets corrupted by concurrent accesses. A quick and small fix
is not possible, so let us revert this for now.&lt;/p&gt;</content:encoded>
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