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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 01:59:24 +0000</lastBuildDate>
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      <title>CVE-2026-93115 — platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-93115</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;platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL&lt;/p&gt;
&lt;p&gt;Every platform driver can be forced to match a device that doesn&amp;#39;t match
its list of device IDs because of device_match_driver_override(), so
platform drivers that rely on the existence of a device&amp;#39;s ACPI companion
object need to verify its presence.&lt;/p&gt;
&lt;p&gt;mlxbf_pmc_probe() passes the result of ACPI_COMPANION() to
acpi_device_hid(), which dereferences it, so force-binding the driver to
a device without an ACPI companion leads to a NULL pointer dereference.&lt;/p&gt;
&lt;p&gt;Accordingly, add a requisite ACPI_COMPANION() check against NULL to the
mlxbf-pmc driver and return -ENODEV when the companion is missing.&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;platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL&lt;/p&gt;
&lt;p&gt;Every platform driver can be forced to match a device that doesn&amp;#39;t match
its list of device IDs because of device_match_driver_override(), so
platform drivers that rely on the existence of a device&amp;#39;s ACPI companion
object need to verify its presence.&lt;/p&gt;
&lt;p&gt;mlxbf_pmc_probe() passes the result of ACPI_COMPANION() to
acpi_device_hid(), which dereferences it, so force-binding the driver to
a device without an ACPI companion leads to a NULL pointer dereference.&lt;/p&gt;
&lt;p&gt;Accordingly, add a requisite ACPI_COMPANION() check against NULL to the
mlxbf-pmc driver and return -ENODEV when the companion is missing.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-93115</guid>
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