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    <title>Most recent entries from all</title>
    <link>https://db.gcve.eu</link>
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    <lastBuildDate>Mon, 09 Nov 2026 16:21:14 +0000</lastBuildDate>
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      <title>CVE-2026-100081 — xen-netback: defer xenvif_mcast_addr_list_free()</title>
      <link>https://db.gcve.eu/vuln/cve-2026-100081</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;xen-netback: defer xenvif_mcast_addr_list_free()&lt;/p&gt;
&lt;p&gt;In order for the function to legitimately avoid locking/RCU, it needs to
run after all TX/RX processing has finished/stopped: Lookups happen from
xenvif_start_xmit(), while adds/removes happen from xenvif_tx_action()
(called out of xenvif_poll()).&lt;/p&gt;
&lt;p&gt;Move the call out of xenvif_disconnect_data() (the call to the function
from connect()&amp;#39;s error path doesn&amp;#39;t require any cleaning up there), and
put it past the synchronization point in backend_disconnect().&lt;/p&gt;
&lt;p&gt;This is XSA-527 / CVE-2026-100081.&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;xen-netback: defer xenvif_mcast_addr_list_free()&lt;/p&gt;
&lt;p&gt;In order for the function to legitimately avoid locking/RCU, it needs to
run after all TX/RX processing has finished/stopped: Lookups happen from
xenvif_start_xmit(), while adds/removes happen from xenvif_tx_action()
(called out of xenvif_poll()).&lt;/p&gt;
&lt;p&gt;Move the call out of xenvif_disconnect_data() (the call to the function
from connect()&amp;#39;s error path doesn&amp;#39;t require any cleaning up there), and
put it past the synchronization point in backend_disconnect().&lt;/p&gt;
&lt;p&gt;This is XSA-527 / CVE-2026-100081.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://db.gcve.eu/vuln/cve-2026-100081</guid>
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