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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Thu, 01 Oct 2026 20:27:51 +0000</lastBuildDate>
    <item>
      <title>CVE-2026-74474 — vxlan: use pskb_network_may_pull() for transmit path header pulls</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-74474</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;vxlan: use pskb_network_may_pull() for transmit path header pulls&lt;/p&gt;
&lt;p&gt;In vxlan_xmit(), arp_reduce(), and vxlan_mdb_entry_skb_get(), pskb_may_pull() was
being called to verify the availability of network layer headers (ARP, IPv6/ND,
IP/IPv6 MDB keys).&lt;/p&gt;
&lt;p&gt;However, during transmit skb-&amp;gt;data points to the MAC header, so skb_network_offset(skb)
is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, len) only checks len bytes from skb-&amp;gt;data
rather than skb_network_offset(skb) + len, which can leave part of the network header
in non-linear frags.&lt;/p&gt;
&lt;p&gt;Replace these remaining pskb_may_pull() calls with pskb_network_may_pull() to properly
account for the MAC header offset.&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;vxlan: use pskb_network_may_pull() for transmit path header pulls&lt;/p&gt;
&lt;p&gt;In vxlan_xmit(), arp_reduce(), and vxlan_mdb_entry_skb_get(), pskb_may_pull() was
being called to verify the availability of network layer headers (ARP, IPv6/ND,
IP/IPv6 MDB keys).&lt;/p&gt;
&lt;p&gt;However, during transmit skb-&amp;gt;data points to the MAC header, so skb_network_offset(skb)
is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, len) only checks len bytes from skb-&amp;gt;data
rather than skb_network_offset(skb) + len, which can leave part of the network header
in non-linear frags.&lt;/p&gt;
&lt;p&gt;Replace these remaining pskb_may_pull() calls with pskb_network_may_pull() to properly
account for the MAC header offset.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-74474</guid>
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