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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 16:54:24 +0000</lastBuildDate>
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      <title>CVE-2026-46071 — KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-46071</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;KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12&lt;/p&gt;
&lt;p&gt;svm_copy_lbrs() always marks VMCB_LBR dirty in the destination VMCB.
However, nested_svm_vmexit() uses it to copy LBRs to vmcb12, and
clearing clean bits in vmcb12 is not architecturally defined.&lt;/p&gt;
&lt;p&gt;Move vmcb_mark_dirty() to callers and drop it for vmcb12.&lt;/p&gt;
&lt;p&gt;This also facilitates incoming refactoring that does not pass the entire
VMCB to svm_copy_lbrs().&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;KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12&lt;/p&gt;
&lt;p&gt;svm_copy_lbrs() always marks VMCB_LBR dirty in the destination VMCB.
However, nested_svm_vmexit() uses it to copy LBRs to vmcb12, and
clearing clean bits in vmcb12 is not architecturally defined.&lt;/p&gt;
&lt;p&gt;Move vmcb_mark_dirty() to callers and drop it for vmcb12.&lt;/p&gt;
&lt;p&gt;This also facilitates incoming refactoring that does not pass the entire
VMCB to svm_copy_lbrs().&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-46071</guid>
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