Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.4.17, < 6.12.91 |
References
- https://git.kernel.org/stable/c/20b3c566e2702e5d4d0545be8a97029a2eebcc0ePatch
- https://git.kernel.org/stable/c/dae251ff11d2d2208a029f98923756831cefec46Patch
- https://git.kernel.org/stable/c/dbd76a537d8cb814e7f5b795ab21ecb7949c821dPatch
- https://git.kernel.org/stable/c/faad224fe0f0857a04ff2eb3c90f0de57f47d0f3Patch
FAQ
What is CVE-2026-53053?
CVE-2026-53053 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 th...
How severe is CVE-2026-53053?
CVE-2026-53053 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53053?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.