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    <title>Most recent entries from all</title>
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    <lastBuildDate>Tue, 06 Oct 2026 19:15:59 +0000</lastBuildDate>
    <item>
      <title>CVE-2021-46906 — HID: usbhid: fix info leak in hid_submit_ctrl</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2021-46906</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;HID: usbhid: fix info leak in hid_submit_ctrl&lt;/p&gt;
&lt;p&gt;In hid_submit_ctrl(), the way of calculating the report length doesn&amp;#39;t
take into account that report-&amp;gt;size can be zero. When running the
syzkaller reproducer, a report of size 0 causes hid_submit_ctrl) to
calculate transfer_buffer_length as 16384. When this urb is passed to
the usb core layer, KMSAN reports an info leak of 16384 bytes.&lt;/p&gt;
&lt;p&gt;To fix this, first modify hid_report_len() to account for the zero
report size case by using DIV_ROUND_UP for the division. Then, call it
from hid_submit_ctrl().&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;HID: usbhid: fix info leak in hid_submit_ctrl&lt;/p&gt;
&lt;p&gt;In hid_submit_ctrl(), the way of calculating the report length doesn&amp;#39;t
take into account that report-&amp;gt;size can be zero. When running the
syzkaller reproducer, a report of size 0 causes hid_submit_ctrl) to
calculate transfer_buffer_length as 16384. When this urb is passed to
the usb core layer, KMSAN reports an info leak of 16384 bytes.&lt;/p&gt;
&lt;p&gt;To fix this, first modify hid_report_len() to account for the zero
report size case by using DIV_ROUND_UP for the division. Then, call it
from hid_submit_ctrl().&lt;/p&gt;</content:encoded>
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