CVE-2025-38216 (GCVE-0-2025-38216)

Vulnerability from cvelistv5 – Published: 2025-07-04 13:37 – Updated: 2025-07-28 04:15
VLAI?
Title
iommu/vt-d: Restore context entry setup order for aliased devices
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Restore context entry setup order for aliased devices Commit 2031c469f816 ("iommu/vt-d: Add support for static identity domain") changed the context entry setup during domain attachment from a set-and-check policy to a clear-and-reset approach. This inadvertently introduced a regression affecting PCI aliased devices behind PCIe-to-PCI bridges. Specifically, keyboard and touchpad stopped working on several Apple Macbooks with below messages: kernel: platform pxa2xx-spi.3: Adding to iommu group 20 kernel: input: Apple SPI Keyboard as /devices/pci0000:00/0000:00:1e.3/pxa2xx-spi.3/spi_master/spi2/spi-APP000D:00/input/input0 kernel: DMAR: DRHD: handling fault status reg 3 kernel: DMAR: [DMA Read NO_PASID] Request device [00:1e.3] fault addr 0xffffa000 [fault reason 0x06] PTE Read access is not set kernel: DMAR: DRHD: handling fault status reg 3 kernel: DMAR: [DMA Read NO_PASID] Request device [00:1e.3] fault addr 0xffffa000 [fault reason 0x06] PTE Read access is not set kernel: applespi spi-APP000D:00: Error writing to device: 01 0e 00 00 kernel: DMAR: DRHD: handling fault status reg 3 kernel: DMAR: [DMA Read NO_PASID] Request device [00:1e.3] fault addr 0xffffa000 [fault reason 0x06] PTE Read access is not set kernel: DMAR: DRHD: handling fault status reg 3 kernel: applespi spi-APP000D:00: Error writing to device: 01 0e 00 00 Fix this by restoring the previous context setup order.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2031c469f8161abe74189cb74f50da224f340b71 , < fb5873b779dd5858123c19bbd6959566771e2e83 (git)
Affected: 2031c469f8161abe74189cb74f50da224f340b71 , < d43c81b691813e16a2d08208ce8947aebdab83cd (git)
Affected: 2031c469f8161abe74189cb74f50da224f340b71 , < 320302baed05c6456164652541f23d2a96522c06 (git)
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    Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.35 , ≤ 6.12.* (semver)
Unaffected: 6.15.4 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "drivers/iommu/intel/iommu.c",
            "drivers/iommu/intel/iommu.h",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Restore context entry setup order for aliased devices\n\nCommit 2031c469f816 (\"iommu/vt-d: Add support for static identity domain\")\nchanged the context entry setup during domain attachment from a\nset-and-check policy to a clear-and-reset approach. This inadvertently\nintroduced a regression affecting PCI aliased devices behind PCIe-to-PCI\nbridges.\n\nSpecifically, keyboard and touchpad stopped working on several Apple\nMacbooks with below messages:\n\n kernel: platform pxa2xx-spi.3: Adding to iommu group 20\n kernel: input: Apple SPI Keyboard as\n /devices/pci0000:00/0000:00:1e.3/pxa2xx-spi.3/spi_master/spi2/spi-APP000D:00/input/input0\n kernel: DMAR: DRHD: handling fault status reg 3\n kernel: DMAR: [DMA Read NO_PASID] Request device [00:1e.3] fault addr\n 0xffffa000 [fault reason 0x06] PTE Read access is not set\n kernel: DMAR: DRHD: handling fault status reg 3\n kernel: DMAR: [DMA Read NO_PASID] Request device [00:1e.3] fault addr\n 0xffffa000 [fault reason 0x06] PTE Read access is not set\n kernel: applespi spi-APP000D:00: Error writing to device: 01 0e 00 00\n kernel: DMAR: DRHD: handling fault status reg 3\n kernel: DMAR: [DMA Read NO_PASID] Request device [00:1e.3] fault addr\n 0xffffa000 [fault reason 0x06] PTE Read access is not set\n kernel: DMAR: DRHD: handling fault status reg 3\n kernel: applespi spi-APP000D:00: Error writing to device: 01 0e 00 00\n\nFix this by restoring the previous context setup order."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:15:25.128Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/d43c81b691813e16a2d08208ce8947aebdab83cd"
        },
        {
          "url": "https://git.kernel.org/stable/c/320302baed05c6456164652541f23d2a96522c06"
        }
      ],
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    "cveId": "CVE-2025-38216",
    "datePublished": "2025-07-04T13:37:33.906Z",
    "dateReserved": "2025-04-16T04:51:23.995Z",
    "dateUpdated": "2025-07-28T04:15:25.128Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1"
}


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