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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Wed, 30 Sep 2026 21:12:38 +0000</lastBuildDate>
    <item>
      <title>CVE-2022-49732 — sock: redo the psock vs ULP protection check</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2022-49732</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;sock: redo the psock vs ULP protection check&lt;/p&gt;
&lt;p&gt;Commit 8a59f9d1e3d4 (&amp;#34;sock: Introduce sk-&amp;gt;sk_prot-&amp;gt;psock_update_sk_prot()&amp;#34;)
has moved the inet_csk_has_ulp(sk) check from sk_psock_init() to
the new tcp_bpf_update_proto() function. I&amp;#39;m guessing that this
was done to allow creating psocks for non-inet sockets.&lt;/p&gt;
&lt;p&gt;Unfortunately the destruction path for psock includes the ULP
unwind, so we need to fail the sk_psock_init() itself.
Otherwise if ULP is already present we&amp;#39;ll notice that later,
and call tcp_update_ulp() with the sk_proto of the ULP
itself, which will most likely result in the ULP looping
its callbacks.&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;sock: redo the psock vs ULP protection check&lt;/p&gt;
&lt;p&gt;Commit 8a59f9d1e3d4 (&amp;#34;sock: Introduce sk-&amp;gt;sk_prot-&amp;gt;psock_update_sk_prot()&amp;#34;)
has moved the inet_csk_has_ulp(sk) check from sk_psock_init() to
the new tcp_bpf_update_proto() function. I&amp;#39;m guessing that this
was done to allow creating psocks for non-inet sockets.&lt;/p&gt;
&lt;p&gt;Unfortunately the destruction path for psock includes the ULP
unwind, so we need to fail the sk_psock_init() itself.
Otherwise if ULP is already present we&amp;#39;ll notice that later,
and call tcp_update_ulp() with the sk_proto of the ULP
itself, which will most likely result in the ULP looping
its callbacks.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2022-49732</guid>
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