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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Sun, 04 Oct 2026 18:15:41 +0000</lastBuildDate>
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      <title>CVE-2026-63919 — xfrm: input: hold netns during deferred transport reinjection</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-63919</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;xfrm: input: hold netns during deferred transport reinjection&lt;/p&gt;
&lt;p&gt;Transport-mode reinjection stores a struct net pointer in skb-&amp;gt;cb and
uses it later from xfrm_trans_reinject(). That pointer must stay valid
until the deferred callback runs.&lt;/p&gt;
&lt;p&gt;Take a netns reference when queueing deferred reinjection work and drop
it after the callback completes. Use maybe_get_net() so the queueing
path does not revive a namespace that is already being torn down.&lt;/p&gt;
&lt;p&gt;This keeps the existing workqueue design and fixes the netns lifetime
handling in one place for all users of xfrm_trans_queue_net().&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;xfrm: input: hold netns during deferred transport reinjection&lt;/p&gt;
&lt;p&gt;Transport-mode reinjection stores a struct net pointer in skb-&amp;gt;cb and
uses it later from xfrm_trans_reinject(). That pointer must stay valid
until the deferred callback runs.&lt;/p&gt;
&lt;p&gt;Take a netns reference when queueing deferred reinjection work and drop
it after the callback completes. Use maybe_get_net() so the queueing
path does not revive a namespace that is already being torn down.&lt;/p&gt;
&lt;p&gt;This keeps the existing workqueue design and fixes the netns lifetime
handling in one place for all users of xfrm_trans_queue_net().&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-63919</guid>
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