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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Tue, 29 Sep 2026 23:44:15 +0000</lastBuildDate>
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      <title>CVE-2026-89806 — drm/sysfb: ofdrm: Fix integer overflow in fb_size calculation</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-89806</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;drm/sysfb: ofdrm: Fix integer overflow in fb_size calculation&lt;/p&gt;
&lt;p&gt;The framebuffer size calculation `fb_size = linebytes * height` can
overflow when both values are large (e.g., 46341 * 46341 &amp;gt; INT_MAX).
Since linebytes and height are both int types, the multiplication is
performed as int * int, which results in undefined behavior on overflow.&lt;/p&gt;
&lt;p&gt;Use check_mul_overflow() to detect and prevent this overflow, consistent
with the approach used in simpledrm.c and corebootdrm.c.&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;drm/sysfb: ofdrm: Fix integer overflow in fb_size calculation&lt;/p&gt;
&lt;p&gt;The framebuffer size calculation `fb_size = linebytes * height` can
overflow when both values are large (e.g., 46341 * 46341 &amp;gt; INT_MAX).
Since linebytes and height are both int types, the multiplication is
performed as int * int, which results in undefined behavior on overflow.&lt;/p&gt;
&lt;p&gt;Use check_mul_overflow() to detect and prevent this overflow, consistent
with the approach used in simpledrm.c and corebootdrm.c.&lt;/p&gt;</content:encoded>
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