CVE-2026-53053
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix clone_alias() to use the original device's devid Currently clone_alias() assumes first argument (pdev) is always the original device pointer. This function is called by pci_for_each_dma_alias() which based on topology decides to send original or alias device details in first argument. This meant that the source devid used to look up and copy the DTE may be incorrect, leading to wrong or stale DTE entries being propagated to alias device. Fix this by passing the original pdev as the opaque data argument to both the direct clone_alias() call and pci_for_each_dma_alias(). Inside clone_alias(), retrieve the original device from data and compute devid from it.
Affected versions
Linux kernel versions
5.4.17,
5.5
and later are affected. Fixed in
6.12.91,
6.18.33,
7.0.10,
7.1
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-53053?
CVE-2026-53053 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.4.17 onward and has been patched in 6.12.91, 6.18.33, 7.0.10 and others. CVE-2026-53053 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-53053?
Yes — CVE-2026-53053 has been patched. Fixed versions include 6.12.91, 6.18.33, 7.0.10 and others. If you are running Linux kernel 5.4.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-53053 actively exploited?
No — CVE-2026-53053 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.