CVE-2026-53053

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> iommu/amd: Fix clone_alias() to use the original device&amp;#39;s devid<br /> <br /> Currently clone_alias() assumes first argument (pdev) is always the<br /> original device pointer. This function is called by<br /> pci_for_each_dma_alias() which based on topology decides to send<br /> original or alias device details in first argument.<br /> <br /> This meant that the source devid used to look up and copy the DTE<br /> may be incorrect, leading to wrong or stale DTE entries being<br /> propagated to alias device.<br /> <br /> Fix this by passing the original pdev as the opaque data argument to<br /> both the direct clone_alias() call and pci_for_each_dma_alias(). Inside<br /> clone_alias(), retrieve the original device from data and compute devid<br /> from it.