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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Sun, 04 Oct 2026 07:57:38 +0000</lastBuildDate>
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      <title>CVE-2026-64236 — i2c: davinci: fix division by zero on missing clock-frequency</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-64236</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: davinci: fix division by zero on missing clock-frequency&lt;/p&gt;
&lt;p&gt;When the &amp;#39;clock-frequency&amp;#39; property is missing from the device tree,
the driver falls back to DAVINCI_I2C_DEFAULT_BUS_FREQ. However, this
macro was defined in kHz (100), whereas the device tree property is
expected in Hz.&lt;/p&gt;
&lt;p&gt;The probe function divided the fallback value by 1000, causing
integer truncation that resulted in dev-&amp;gt;bus_freq = 0. This triggered
a deterministic division-by-zero kernel panic when calculating clock
dividers later in the probe sequence.&lt;/p&gt;
&lt;p&gt;Fix this by redefining DAVINCI_I2C_DEFAULT_BUS_FREQ in Hz (100000)
to match the expected device tree property unit, allowing the existing
division logic to work correctly for both cases.&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: davinci: fix division by zero on missing clock-frequency&lt;/p&gt;
&lt;p&gt;When the &amp;#39;clock-frequency&amp;#39; property is missing from the device tree,
the driver falls back to DAVINCI_I2C_DEFAULT_BUS_FREQ. However, this
macro was defined in kHz (100), whereas the device tree property is
expected in Hz.&lt;/p&gt;
&lt;p&gt;The probe function divided the fallback value by 1000, causing
integer truncation that resulted in dev-&amp;gt;bus_freq = 0. This triggered
a deterministic division-by-zero kernel panic when calculating clock
dividers later in the probe sequence.&lt;/p&gt;
&lt;p&gt;Fix this by redefining DAVINCI_I2C_DEFAULT_BUS_FREQ in Hz (100000)
to match the expected device tree property unit, allowing the existing
division logic to work correctly for both cases.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-64236</guid>
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