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    <title>Most recent entries from all</title>
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    <lastBuildDate>Tue, 29 Sep 2026 11:19:44 +0000</lastBuildDate>
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      <title>CVE-2023-53049 — usb: ucsi: Fix NULL pointer deref in ucsi_connector_change()</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2023-53049</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;usb: ucsi: Fix NULL pointer deref in ucsi_connector_change()&lt;/p&gt;
&lt;p&gt;When ucsi_init() fails, ucsi-&amp;gt;connector is NULL, yet in case of
ucsi_acpi we may still get events which cause the ucs_acpi code to call
ucsi_connector_change(), which then derefs the NULL ucsi-&amp;gt;connector
pointer.&lt;/p&gt;
&lt;p&gt;Fix this by not setting ucsi-&amp;gt;ntfy inside ucsi_init() until ucsi_init()
has succeeded, so that ucsi_connector_change() ignores the events
because UCSI_ENABLE_NTFY_CONNECTOR_CHANGE is not set in the ntfy mask.&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;usb: ucsi: Fix NULL pointer deref in ucsi_connector_change()&lt;/p&gt;
&lt;p&gt;When ucsi_init() fails, ucsi-&amp;gt;connector is NULL, yet in case of
ucsi_acpi we may still get events which cause the ucs_acpi code to call
ucsi_connector_change(), which then derefs the NULL ucsi-&amp;gt;connector
pointer.&lt;/p&gt;
&lt;p&gt;Fix this by not setting ucsi-&amp;gt;ntfy inside ucsi_init() until ucsi_init()
has succeeded, so that ucsi_connector_change() ignores the events
because UCSI_ENABLE_NTFY_CONNECTOR_CHANGE is not set in the ntfy mask.&lt;/p&gt;</content:encoded>
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