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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Fri, 09 Oct 2026 23:42:17 +0000</lastBuildDate>
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      <title>CVE-2026-68447 — drm/amdkfd: clamp v9 CRIU control stack checkpoint copy to BO size</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-68447</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/amdkfd: clamp v9 CRIU control stack checkpoint copy to BO size&lt;/p&gt;
&lt;p&gt;CRIU checkpoint copies the MQD control stack using cp_hqd_cntl_stack_size
from hardware without bounding it to the allocated BO region. If the HW
field is larger than the queue&amp;#39;s control stack allocation, memcpy reads
past the BO into adjacent GTT memory and can leak kernel data to userspace.&lt;/p&gt;
&lt;p&gt;Store the page-aligned control stack BO size in mqd_manager and clamp
checkpoint copies and reported checkpoint sizes to
min(cp_hqd_cntl_stack_size, mm-&amp;gt;ctl_stack_size). Apply the same bound
for multi-XCC v9.4.3 checkpoint layout.&lt;/p&gt;
&lt;p&gt;(cherry picked from commit 6c2abd0ec09e86c6323010673766f76050e28aa3)&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/amdkfd: clamp v9 CRIU control stack checkpoint copy to BO size&lt;/p&gt;
&lt;p&gt;CRIU checkpoint copies the MQD control stack using cp_hqd_cntl_stack_size
from hardware without bounding it to the allocated BO region. If the HW
field is larger than the queue&amp;#39;s control stack allocation, memcpy reads
past the BO into adjacent GTT memory and can leak kernel data to userspace.&lt;/p&gt;
&lt;p&gt;Store the page-aligned control stack BO size in mqd_manager and clamp
checkpoint copies and reported checkpoint sizes to
min(cp_hqd_cntl_stack_size, mm-&amp;gt;ctl_stack_size). Apply the same bound
for multi-XCC v9.4.3 checkpoint layout.&lt;/p&gt;
&lt;p&gt;(cherry picked from commit 6c2abd0ec09e86c6323010673766f76050e28aa3)&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-68447</guid>
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