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    <lastBuildDate>Thu, 01 Oct 2026 21:53:13 +0000</lastBuildDate>
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      <title>CVE-2026-53280 — iommu: Fix NULL group-&gt;domain dereference in pci_dev_reset_iommu_done()</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-53280</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;iommu: Fix NULL group-&amp;gt;domain dereference in pci_dev_reset_iommu_done()&lt;/p&gt;
&lt;p&gt;Local sashiko review pointed it out that group-&amp;gt;domain could be NULL when
a default domain fails to allocate during the first probe, which can crash
at domain-&amp;gt;ops-&amp;gt;attach_dev dereference in __iommu_attach_device() invoked
by pci_dev_reset_iommu_done().&lt;/p&gt;
&lt;p&gt;pci_dev_reset_iommu_prepare() is fine as an old_domain pointer can be NULL.&lt;/p&gt;
&lt;p&gt;Skip the re-attach in pci_dev_reset_iommu_done() to fix the bug.&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;iommu: Fix NULL group-&amp;gt;domain dereference in pci_dev_reset_iommu_done()&lt;/p&gt;
&lt;p&gt;Local sashiko review pointed it out that group-&amp;gt;domain could be NULL when
a default domain fails to allocate during the first probe, which can crash
at domain-&amp;gt;ops-&amp;gt;attach_dev dereference in __iommu_attach_device() invoked
by pci_dev_reset_iommu_done().&lt;/p&gt;
&lt;p&gt;pci_dev_reset_iommu_prepare() is fine as an old_domain pointer can be NULL.&lt;/p&gt;
&lt;p&gt;Skip the re-attach in pci_dev_reset_iommu_done() to fix the bug.&lt;/p&gt;</content:encoded>
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