Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix clone_alias() to use the original device's devid Currently…
A vulnerability in the Linux kernel's iommu/amd component was fixed by correcting the clone_alias() function to use the original device's devid. The function previously assumed the first argument was always the original device pointer, which could lead to incorrect or stale device table entries being propagated to alias devices. This issue has been resolved by ensuring the original device pointer is passed and used correctly during cloning. The vulnerability affects multiple Ubuntu Linux kernel versions prior to 7.0.0-28.28~24.04.1 and related builds.
AI Analysis
Technical Summary
The Linux kernel vulnerability involves the iommu/amd subsystem where the clone_alias() function incorrectly assumes its first argument is always the original device pointer. Since pci_for_each_dma_alias() may pass either the original or an alias device pointer based on topology, this assumption can cause the device ID (devid) used to look up and copy the device translation entry (DTE) to be incorrect. Consequently, wrong or stale DTE entries could be propagated to alias devices. The fix involves passing the original device pointer as opaque data to clone_alias() and pci_for_each_dma_alias(), ensuring the correct devid is computed and used.
Potential Impact
Incorrect device ID propagation in the iommu/amd subsystem could lead to stale or wrong device translation entries being used for alias devices. According to the CVSS vector, this vulnerability has a local attack vector with low complexity and low privileges required, no user interaction, and a scope change. It results in high impact on confidentiality, integrity, and availability, indicating potential for significant system compromise if exploited.
Mitigation Recommendations
A fix is available for this vulnerability in the Linux kernel. Users should update to kernel versions 7.0.0-28.28~24.04.1 or later, or the corresponding patched versions for their Ubuntu distributions as listed. Since this is not a cloud service, manual patching is required. Check the vendor or distribution advisory for the exact patched versions and update accordingly.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix clone_alias() to use the original device's devid Currently…
Description
A vulnerability in the Linux kernel's iommu/amd component was fixed by correcting the clone_alias() function to use the original device's devid. The function previously assumed the first argument was always the original device pointer, which could lead to incorrect or stale device table entries being propagated to alias devices. This issue has been resolved by ensuring the original device pointer is passed and used correctly during cloning. The vulnerability affects multiple Ubuntu Linux kernel versions prior to 7.0.0-28.28~24.04.1 and related builds.
CVSS v3.1
Score 8.8high
Affected software
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protected]?arch=source&distro=resolutepkg:deb/ubuntu/[email protected]?arch=source&distro=resolutepkg:deb/ubuntu/[email protected]?arch=source&distro=resolutepkg:deb/ubuntu/[email protected]?arch=source&distro=resolutepkg:deb/ubuntu/[email protected]?arch=source&distro=resoluteRun on your own infrastructure? 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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel vulnerability involves the iommu/amd subsystem where the clone_alias() function incorrectly assumes its first argument is always the original device pointer. Since pci_for_each_dma_alias() may pass either the original or an alias device pointer based on topology, this assumption can cause the device ID (devid) used to look up and copy the device translation entry (DTE) to be incorrect. Consequently, wrong or stale DTE entries could be propagated to alias devices. The fix involves passing the original device pointer as opaque data to clone_alias() and pci_for_each_dma_alias(), ensuring the correct devid is computed and used.
Potential Impact
Incorrect device ID propagation in the iommu/amd subsystem could lead to stale or wrong device translation entries being used for alias devices. According to the CVSS vector, this vulnerability has a local attack vector with low complexity and low privileges required, no user interaction, and a scope change. It results in high impact on confidentiality, integrity, and availability, indicating potential for significant system compromise if exploited.
Mitigation Recommendations
A fix is available for this vulnerability in the Linux kernel. Users should update to kernel versions 7.0.0-28.28~24.04.1 or later, or the corresponding patched versions for their Ubuntu distributions as listed. Since this is not a cloud service, manual patching is required. Check the vendor or distribution advisory for the exact patched versions and update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-53053
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:20.04:LTS","Ubuntu:Pro:FIPS-updates:20.04:LTS","Ubuntu:Pro:FIPS:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:Nvidia-BlueField:22.04:LTS","Ubuntu:Pro:FIPS-preview:22.04:LTS","Ubuntu:Pro:FIPS-updates:22.04:LTS","Ubuntu:Pro:Realtime:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:Nvidia-BlueField:24.04:LTS","Ubuntu:Pro:FIPS-updates:24.04:LTS","Ubuntu:Pro:Realtime:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- 3.1
Threat ID: 6a5a014391ae9bcd3f801be5
Added to database: 07/17/2026, 10:17:39 UTC
Last enriched: 07/30/2026, 21:08:14 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 3
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