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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Fri, 02 Oct 2026 12:09:03 +0000</lastBuildDate>
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      <title>CVE-2026-74286 — net: pfcp: allocate per-cpu tstats for PFCP netdevs</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-74286</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: pfcp: allocate per-cpu tstats for PFCP netdevs&lt;/p&gt;
&lt;p&gt;PFCP uses dev_get_tstats64() as its ndo_get_stats64 callback, but
pfcp_link_setup() does not request NETDEV_PCPU_STAT_TSTATS.  The net
core therefore leaves dev-&amp;gt;tstats NULL for PFCP devices.&lt;/p&gt;
&lt;p&gt;Creating a PFCP rtnetlink device can immediately ask the new netdev for
stats while building the RTM_NEWLINK notification.  That reaches
dev_get_tstats64() and dereferences the NULL dev-&amp;gt;tstats pointer.&lt;/p&gt;
&lt;p&gt;Set pcpu_stat_type to NETDEV_PCPU_STAT_TSTATS during PFCP link setup so
the net core allocates the storage expected by dev_get_tstats64().&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: pfcp: allocate per-cpu tstats for PFCP netdevs&lt;/p&gt;
&lt;p&gt;PFCP uses dev_get_tstats64() as its ndo_get_stats64 callback, but
pfcp_link_setup() does not request NETDEV_PCPU_STAT_TSTATS.  The net
core therefore leaves dev-&amp;gt;tstats NULL for PFCP devices.&lt;/p&gt;
&lt;p&gt;Creating a PFCP rtnetlink device can immediately ask the new netdev for
stats while building the RTM_NEWLINK notification.  That reaches
dev_get_tstats64() and dereferences the NULL dev-&amp;gt;tstats pointer.&lt;/p&gt;
&lt;p&gt;Set pcpu_stat_type to NETDEV_PCPU_STAT_TSTATS during PFCP link setup so
the net core allocates the storage expected by dev_get_tstats64().&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-74286</guid>
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