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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 03:12:33 +0000</lastBuildDate>
    <item>
      <title>CVE-2026-97998 — netfilter: nfnetlink_log: cope with concurrent instance destruction</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-97998</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;netfilter: nfnetlink_log: cope with concurrent instance destruction&lt;/p&gt;
&lt;p&gt;Instances are refcounted. However, only memory release happens on the
1 -&amp;gt; 0 transition; the unlink from hashes can occur with any refcount.&lt;/p&gt;
&lt;p&gt;Uncooperative userspace can force a situation where a queue is pending
for destruction from netlink event while a different socket with same
portid processes an UNBIND request.&lt;/p&gt;
&lt;p&gt;With right timing, this will unhash the instance again:&lt;/p&gt;
&lt;p&gt;Oops: general protection fault, [..]
Call Trace:
 &amp;lt;TASK&amp;gt;
 nfulnl_recv_config+0x31a/0xd50
 nfnetlink_rcv_msg+0x7c2/0xeb0&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;netfilter: nfnetlink_log: cope with concurrent instance destruction&lt;/p&gt;
&lt;p&gt;Instances are refcounted. However, only memory release happens on the
1 -&amp;gt; 0 transition; the unlink from hashes can occur with any refcount.&lt;/p&gt;
&lt;p&gt;Uncooperative userspace can force a situation where a queue is pending
for destruction from netlink event while a different socket with same
portid processes an UNBIND request.&lt;/p&gt;
&lt;p&gt;With right timing, this will unhash the instance again:&lt;/p&gt;
&lt;p&gt;Oops: general protection fault, [..]
Call Trace:
 &amp;lt;TASK&amp;gt;
 nfulnl_recv_config+0x31a/0xd50
 nfnetlink_rcv_msg+0x7c2/0xeb0&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-97998</guid>
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