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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 01:09:31 +0000</lastBuildDate>
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      <title>CVE-2026-89994 — dmaengine: fsl-edma: tracing: no ptr dereference during log output</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-89994</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;dmaengine: fsl-edma: tracing: no ptr dereference during log output&lt;/p&gt;
&lt;p&gt;The fsl edma events store a pointer to a struct fsl_edma_engine in the
ringbuffer and dereference it when a log entry is printed. At this time,
the pointer may no longer be valid.&lt;/p&gt;
&lt;p&gt;Event injection can be used to trigger a crash:&lt;/p&gt;
&lt;p&gt;$ cd /sys/kernel/tracing
$ echo &amp;#39;value = 0&amp;#39; &amp;gt; events/fsl_edma/edma_writeb/inject
$ cat trace&lt;/p&gt;
&lt;p&gt;The log output needs only edma-&amp;gt;membase. Add a membase field at the end
of the event and use the new field for log output. Keep the existing
fields for backward compatibility.&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;dmaengine: fsl-edma: tracing: no ptr dereference during log output&lt;/p&gt;
&lt;p&gt;The fsl edma events store a pointer to a struct fsl_edma_engine in the
ringbuffer and dereference it when a log entry is printed. At this time,
the pointer may no longer be valid.&lt;/p&gt;
&lt;p&gt;Event injection can be used to trigger a crash:&lt;/p&gt;
&lt;p&gt;$ cd /sys/kernel/tracing
$ echo &amp;#39;value = 0&amp;#39; &amp;gt; events/fsl_edma/edma_writeb/inject
$ cat trace&lt;/p&gt;
&lt;p&gt;The log output needs only edma-&amp;gt;membase. Add a membase field at the end
of the event and use the new field for log output. Keep the existing
fields for backward compatibility.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-89994</guid>
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