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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 19:58:28 +0000</lastBuildDate>
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      <title>CVE-2025-40340 — drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-40340</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/xe: Fix oops in xe_gem_fault when running core_hotunplug test.&lt;/p&gt;
&lt;p&gt;I saw an oops in xe_gem_fault when running the xe-fast-feedback
testlist against the realtime kernel without debug options enabled.&lt;/p&gt;
&lt;p&gt;The panic happens after core_hotunplug unbind-rebind finishes.
Presumably what happens is that a process mmaps, unlocks because
of the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left,
causing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since
there was nothing left to populate, and then oopses in
&amp;#34;mem_type_is_vram(tbo-&amp;gt;resource-&amp;gt;mem_type)&amp;#34; because tbo-&amp;gt;resource
is NULL.&lt;/p&gt;
&lt;p&gt;It&amp;#39;s convoluted, but fits the data and explains the oops after
the test exits.&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/xe: Fix oops in xe_gem_fault when running core_hotunplug test.&lt;/p&gt;
&lt;p&gt;I saw an oops in xe_gem_fault when running the xe-fast-feedback
testlist against the realtime kernel without debug options enabled.&lt;/p&gt;
&lt;p&gt;The panic happens after core_hotunplug unbind-rebind finishes.
Presumably what happens is that a process mmaps, unlocks because
of the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left,
causing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since
there was nothing left to populate, and then oopses in
&amp;#34;mem_type_is_vram(tbo-&amp;gt;resource-&amp;gt;mem_type)&amp;#34; because tbo-&amp;gt;resource
is NULL.&lt;/p&gt;
&lt;p&gt;It&amp;#39;s convoluted, but fits the data and explains the oops after
the test exits.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2025-40340</guid>
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