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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 07:37:56 +0000</lastBuildDate>
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      <title>CVE-2023-53551 — usb: gadget: u_serial: Add null pointer check in gserial_resume</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2023-53551</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: gadget: u_serial: Add null pointer check in gserial_resume&lt;/p&gt;
&lt;p&gt;Consider a case where gserial_disconnect has already cleared
gser-&amp;gt;ioport. And if a wakeup interrupt triggers afterwards,
gserial_resume gets called, which will lead to accessing of
gser-&amp;gt;ioport and thus causing null pointer dereference.Add
a null pointer check to prevent this.&lt;/p&gt;
&lt;p&gt;Added a static spinlock to prevent gser-&amp;gt;ioport from becoming
null after the newly added check.&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: gadget: u_serial: Add null pointer check in gserial_resume&lt;/p&gt;
&lt;p&gt;Consider a case where gserial_disconnect has already cleared
gser-&amp;gt;ioport. And if a wakeup interrupt triggers afterwards,
gserial_resume gets called, which will lead to accessing of
gser-&amp;gt;ioport and thus causing null pointer dereference.Add
a null pointer check to prevent this.&lt;/p&gt;
&lt;p&gt;Added a static spinlock to prevent gser-&amp;gt;ioport from becoming
null after the newly added check.&lt;/p&gt;</content:encoded>
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