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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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      <title>CVE-2023-53559 — ip_vti: fix potential slab-use-after-free in decode_session6</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2023-53559</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;ip_vti: fix potential slab-use-after-free in decode_session6&lt;/p&gt;
&lt;p&gt;When ip_vti device is set to the qdisc of the sfb type, the cb field
of the sent skb may be modified during enqueuing. Then,
slab-use-after-free may occur when ip_vti device sends IPv6 packets.
As commit f855691975bb (&amp;#34;xfrm6: Fix the nexthdr offset in
_decode_session6.&amp;#34;) showed, xfrm_decode_session was originally intended
only for the receive path. IP6CB(skb)-&amp;gt;nhoff is not set during
transmission. Therefore, set the cb field in the skb to 0 before
sending packets.&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;ip_vti: fix potential slab-use-after-free in decode_session6&lt;/p&gt;
&lt;p&gt;When ip_vti device is set to the qdisc of the sfb type, the cb field
of the sent skb may be modified during enqueuing. Then,
slab-use-after-free may occur when ip_vti device sends IPv6 packets.
As commit f855691975bb (&amp;#34;xfrm6: Fix the nexthdr offset in
_decode_session6.&amp;#34;) showed, xfrm_decode_session was originally intended
only for the receive path. IP6CB(skb)-&amp;gt;nhoff is not set during
transmission. Therefore, set the cb field in the skb to 0 before
sending packets.&lt;/p&gt;</content:encoded>
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