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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Thu, 01 Oct 2026 10:21:55 +0000</lastBuildDate>
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      <title>CVE-2026-68257 — drm/amdkfd: fix 32-bit overflow in CWSR total size calculation</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-68257</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: fix 32-bit overflow in CWSR total size calculation&lt;/p&gt;
&lt;p&gt;total_cwsr_size was computed in 32-bit before being used as a BO/SVM
allocation size.
With large ctx_save_restore_area_size and debug_memory_size
multiplied by the XCC count, the product can wrap,
yielding an undersized CWSR save area that firmware later overruns.&lt;/p&gt;
&lt;p&gt;Promote total_cwsr_size to u64 and use check_add_overflow()/
check_mul_overflow() in both kfd_queue_acquire_buffers() and
kfd_queue_release_buffers().&lt;/p&gt;
&lt;p&gt;(cherry picked from commit 319f7e13423ae3f486b9aea82f9ad2d6af0ee608)&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: fix 32-bit overflow in CWSR total size calculation&lt;/p&gt;
&lt;p&gt;total_cwsr_size was computed in 32-bit before being used as a BO/SVM
allocation size.
With large ctx_save_restore_area_size and debug_memory_size
multiplied by the XCC count, the product can wrap,
yielding an undersized CWSR save area that firmware later overruns.&lt;/p&gt;
&lt;p&gt;Promote total_cwsr_size to u64 and use check_add_overflow()/
check_mul_overflow() in both kfd_queue_acquire_buffers() and
kfd_queue_release_buffers().&lt;/p&gt;
&lt;p&gt;(cherry picked from commit 319f7e13423ae3f486b9aea82f9ad2d6af0ee608)&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-68257</guid>
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