8.8

CVE-2026-53053

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

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 3332364e4ebc0581d133a334645a20fd13b580f1
Version < dbd76a537d8cb814e7f5b795ab21ecb7949c821d
Status affected
Version 3332364e4ebc0581d133a334645a20fd13b580f1
Version < 20b3c566e2702e5d4d0545be8a97029a2eebcc0e
Status affected
Version 3332364e4ebc0581d133a334645a20fd13b580f1
Version < dae251ff11d2d2208a029f98923756831cefec46
Status affected
Version 3332364e4ebc0581d133a334645a20fd13b580f1
Version < faad224fe0f0857a04ff2eb3c90f0de57f47d0f3
Status affected
Version 1f03a258f20f1699ede29bb40804074db9398a0d
Status affected
Version 5.4.17
Version < 5.5
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.5
Status affected
Version 0
Version < 5.5
Status unaffected
Version <= 6.12.*
Version 6.12.91
Status unaffected
Version <= 6.18.*
Version 6.18.33
Status unaffected
Version <= 7.0.*
Version 7.0.10
Status unaffected
Version <= *
Version 7.1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.029
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 8.8 2 6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/dbd76a537d8cb814e7f5b795ab21ecb7949c821d
https://git.kernel.org/stable/c/20b3c566e2702e5d4d0545be8a97029a2eebcc0e
https://git.kernel.org/stable/c/dae251ff11d2d2208a029f98923756831cefec46
https://git.kernel.org/stable/c/faad224fe0f0857a04ff2eb3c90f0de57f47d0f3