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    <link>https://cve.radiocsirt.org</link>
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    <lastBuildDate>Tue, 06 Oct 2026 16:40:14 +0000</lastBuildDate>
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      <title>CVE-2026-89476 — sctp: fix stream-&gt;outcnt underflow on duplicate RECONF responses</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-89476</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;sctp: fix stream-&amp;gt;outcnt underflow on duplicate RECONF responses&lt;/p&gt;
&lt;p&gt;A cached RECONF chunk may contain more than one request parameter.  A
duplicate response can therefore find and process the same ADD_OUT request
again while another parameter is still outstanding, rolling back outcnt
twice and possibly underflowing it.&lt;/p&gt;
&lt;p&gt;Track outstanding request types as bits and clear each bit after its first
response.  Later responses for the same request are then ignored.&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;sctp: fix stream-&amp;gt;outcnt underflow on duplicate RECONF responses&lt;/p&gt;
&lt;p&gt;A cached RECONF chunk may contain more than one request parameter.  A
duplicate response can therefore find and process the same ADD_OUT request
again while another parameter is still outstanding, rolling back outcnt
twice and possibly underflowing it.&lt;/p&gt;
&lt;p&gt;Track outstanding request types as bits and clear each bit after its first
response.  Later responses for the same request are then ignored.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://cve.radiocsirt.org/vuln/cve-2026-89476</guid>
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