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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Fri, 02 Oct 2026 17:03:34 +0000</lastBuildDate>
    <item>
      <title>CVE-2026-43171 — EFI/CPER: don't dump the entire memory region</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-43171</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;EFI/CPER: don&amp;#39;t dump the entire memory region&lt;/p&gt;
&lt;p&gt;The current logic at cper_print_fw_err() doesn&amp;#39;t check if the
error record length is big enough to handle offset. On a bad firmware,
if the ofset is above the actual record, length -= offset will
underflow, making it dump the entire memory.&lt;/p&gt;
&lt;p&gt;The end result can be:&lt;/p&gt;
&lt;p&gt;- the logic taking a lot of time dumping large regions of memory;
 - data disclosure due to the memory dumps;
 - an OOPS, if it tries to dump an unmapped memory region.&lt;/p&gt;
&lt;p&gt;Fix it by checking if the section length is too small before doing
a hex dump.&lt;/p&gt;
&lt;p&gt;[ rjw: Subject tweaks ]&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;EFI/CPER: don&amp;#39;t dump the entire memory region&lt;/p&gt;
&lt;p&gt;The current logic at cper_print_fw_err() doesn&amp;#39;t check if the
error record length is big enough to handle offset. On a bad firmware,
if the ofset is above the actual record, length -= offset will
underflow, making it dump the entire memory.&lt;/p&gt;
&lt;p&gt;The end result can be:&lt;/p&gt;
&lt;p&gt;- the logic taking a lot of time dumping large regions of memory;
 - data disclosure due to the memory dumps;
 - an OOPS, if it tries to dump an unmapped memory region.&lt;/p&gt;
&lt;p&gt;Fix it by checking if the section length is too small before doing
a hex dump.&lt;/p&gt;
&lt;p&gt;[ rjw: Subject tweaks ]&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-43171</guid>
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