CVE-2026-53053iommu/amd: Fix clone_alias() to use the original device's devid
Updated under an hour ago ()
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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)
- Not given
- 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
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 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
- https://git.kernel.org/stable/c/dbd76a537d8cb814e7f5b795ab21ecb7949c821dpatch
- https://git.kernel.org/stable/c/20b3c566e2702e5d4d0545be8a97029a2eebcc0epatch
- https://git.kernel.org/stable/c/dae251ff11d2d2208a029f98923756831cefec46patch
- https://git.kernel.org/stable/c/faad224fe0f0857a04ff2eb3c90f0de57f47d0f3patch
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.