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    <lastBuildDate>Fri, 09 Oct 2026 23:07:43 +0000</lastBuildDate>
    <item>
      <title>CVE-2026-98233 — net/packet: clear RX owner on VNET header error</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-98233</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;net/packet: clear RX owner on VNET header error&lt;/p&gt;
&lt;p&gt;Commit 61fad6816fc1 (&amp;#34;net/packet: tpacket_rcv: avoid a producer race
condition&amp;#34;) added rx_owner_map and made tpacket_rcv() claim a V1 or V2
ring slot before converting the virtio-net header.  If the conversion
fails, the drop path leaves the slot claimed.&lt;/p&gt;
&lt;p&gt;With a one-frame TPACKET_V2 ring, an unsupported UDP GSO packet leaves
the only slot unavailable, so the ring also drops the next valid packet.&lt;/p&gt;
&lt;p&gt;Clear the ownership bit on this error path.  TPACKET_V3 already clears
its block state here.&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;net/packet: clear RX owner on VNET header error&lt;/p&gt;
&lt;p&gt;Commit 61fad6816fc1 (&amp;#34;net/packet: tpacket_rcv: avoid a producer race
condition&amp;#34;) added rx_owner_map and made tpacket_rcv() claim a V1 or V2
ring slot before converting the virtio-net header.  If the conversion
fails, the drop path leaves the slot claimed.&lt;/p&gt;
&lt;p&gt;With a one-frame TPACKET_V2 ring, an unsupported UDP GSO packet leaves
the only slot unavailable, so the ring also drops the next valid packet.&lt;/p&gt;
&lt;p&gt;Clear the ownership bit on this error path.  TPACKET_V3 already clears
its block state here.&lt;/p&gt;</content:encoded>
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