High 8.8Published Jun 24, 2026

CVE-2026-53053iommu/amd: Fix clone_alias() to use the original device's devid

Updated under an hour ago (Oct 28, 2026, 5:23 AM ET)

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-681
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	3332364e4ebc0581d133a334645a20fd13b580f1 builds before 166a08644aa509e5d27e154d7fa774f4181df9e0; from 3332364e4ebc0581d133a334645a20fd13b580f1 before dbd76a537d8cb814e7f5b795ab21ecb7949c821d; 3332364e4ebc0581d133a334645a20fd13b580f1 builds before 20b3c566e2702e5d4d0545be8a97029a2eebcc0e; from 3332364e4ebc0581d133a334645a20fd13b580f1 before dae251ff11d2d2208a029f98923756831cefec46; from 3332364e4ebc0581d133a334645a20fd13b580f1 before faad224fe0f0857a04ff2eb3c90f0de57f47d0f3; 1f03a258f20f1699ede29bb40804074db9398a0d; from 5.4.17 before 5.5	CNA record
linux linux_kernel linux:linux_kernel	from 5.4.17 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10	NVD

References

References

https://git.kernel.org/stable/c/166a08644aa509e5d27e154d7fa774f4181df9e0
https://git.kernel.org/stable/c/dbd76a537d8cb814e7f5b795ab21ecb7949c821d	patch
https://git.kernel.org/stable/c/20b3c566e2702e5d4d0545be8a97029a2eebcc0e	patch
https://git.kernel.org/stable/c/dae251ff11d2d2208a029f98923756831cefec46	patch
https://git.kernel.org/stable/c/faad224fe0f0857a04ff2eb3c90f0de57f47d0f3	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.