Riskcovery

CVE-2026-53053

iommu/amd: Fix clone_alias() to use the original device's devid

State
Published
Severity
8.8 High
Published
Jun 24, 2026
Updated
Oct 30, 2026
Reserved
Jun 9, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HLinux

Weaknesses

  • CWE-681 Incorrect Conversion between Numeric Types

Affected Products

ProductVersions
LinuxLinux
  • 3332364e4ebc0581d133a334645a20fd13b580f1 to before 880a2e6c887c8f51870c0a00dfba3c8519178b65Affected
  • 3332364e4ebc0581d133a334645a20fd13b580f1 to before 166a08644aa509e5d27e154d7fa774f4181df9e0Affected
  • 3332364e4ebc0581d133a334645a20fd13b580f1 to before dbd76a537d8cb814e7f5b795ab21ecb7949c821dAffected
  • 3332364e4ebc0581d133a334645a20fd13b580f1 to before 20b3c566e2702e5d4d0545be8a97029a2eebcc0eAffected
  • 3332364e4ebc0581d133a334645a20fd13b580f1 to before dae251ff11d2d2208a029f98923756831cefec46Affected
  • 3332364e4ebc0581d133a334645a20fd13b580f1 to before faad224fe0f0857a04ff2eb3c90f0de57f47d0f3Affected
  • 1f03a258f20f1699ede29bb40804074db9398a0dAffected
  • 5.4.17 to before 5.5Affected
LinuxLinux
  • 5.5Affected
  • before 5.5Not affected
  • 6.1.191 through 6.1.*Not affected
  • 6.6.160 through 6.6.*Not affected
  • 6.12.91 through 6.12.*Not affected
  • 6.18.33 through 6.18.*Not affected
  • 7.0.10 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

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