CVE-2026-53053High· 8.8▾ TwilightIn 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 funct…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.1%
Last analysed / modified upstream
0.1% → 0.1%
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.
Linux >= 3332364e4ebc0581d133a334645a20fd13b580f1 < 166a08644aa509e5d27e154d7fa774f4181df9e0Linux >= 3332364e4ebc0581d133a334645a20fd13b580f1 < dbd76a537d8cb814e7f5b795ab21ecb7949c821dLinux >= 3332364e4ebc0581d133a334645a20fd13b580f1 < 20b3c566e2702e5d4d0545be8a97029a2eebcc0eLinux >= 3332364e4ebc0581d133a334645a20fd13b580f1 < dae251ff11d2d2208a029f98923756831cefec46Linux >= 3332364e4ebc0581d133a334645a20fd13b580f1 < faad224fe0f0857a04ff2eb3c90f0de57f47d0f3Linux 1f03a258f20f1699ede29bb40804074db9398a0dLinux >= 5.4.17 < 5.5Linux 5.5Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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