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    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Mon, 28 Sep 2026 07:37:39 +0000</lastBuildDate>
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      <title>CVE-2025-39680 — i2c: rtl9300: Fix out-of-bounds bug in rtl9300_i2c_smbus_xfer</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-39680</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;i2c: rtl9300: Fix out-of-bounds bug in rtl9300_i2c_smbus_xfer&lt;/p&gt;
&lt;p&gt;The data-&amp;gt;block[0] variable comes from user. Without proper check,
the variable may be very large to cause an out-of-bounds bug.&lt;/p&gt;
&lt;p&gt;Fix this bug by checking the value of data-&amp;gt;block[0] first.&lt;/p&gt;
&lt;p&gt;1. commit 39244cc75482 (&amp;#34;i2c: ismt: Fix an out-of-bounds bug in
   ismt_access()&amp;#34;)
2. commit 92fbb6d1296f (&amp;#34;i2c: xgene-slimpro: Fix out-of-bounds bug in
   xgene_slimpro_i2c_xfer()&amp;#34;)&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;i2c: rtl9300: Fix out-of-bounds bug in rtl9300_i2c_smbus_xfer&lt;/p&gt;
&lt;p&gt;The data-&amp;gt;block[0] variable comes from user. Without proper check,
the variable may be very large to cause an out-of-bounds bug.&lt;/p&gt;
&lt;p&gt;Fix this bug by checking the value of data-&amp;gt;block[0] first.&lt;/p&gt;
&lt;p&gt;1. commit 39244cc75482 (&amp;#34;i2c: ismt: Fix an out-of-bounds bug in
   ismt_access()&amp;#34;)
2. commit 92fbb6d1296f (&amp;#34;i2c: xgene-slimpro: Fix out-of-bounds bug in
   xgene_slimpro_i2c_xfer()&amp;#34;)&lt;/p&gt;</content:encoded>
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