Vulnerability-Lookup

FKIE_CVE-2024-50101

Vulnerability from fkie_nvd - Published: 2024-11-05 18:15 - Updated: 2026-08-04 11:21

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix incorrect pci_for_each_dma_alias() for non-PCI devices Previously, the domain_context_clear() function incorrectly called pci_for_each_dma_alias() to set up context entries for non-PCI devices. This could lead to kernel hangs or other unexpected behavior. Add a check to only call pci_for_each_dma_alias() for PCI devices. For non-PCI devices, domain_context_clear_one() is called directly.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/04d6826ba7ba81213422276e96c90c6565169e1c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0bd9a30c22afb5da203386b811ec31429d2caa78	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6e02a277f1db24fa039e23783c8921c7b0e5b1b3	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cbfa3a83eba05240ce37839ed48280a05e8e8f6c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fe2e0b6cd00abea3efac66de1da22d844364c1b0	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.12
linux	linux_kernel	6.12
linux	linux_kernel	6.12

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/intel/iommu.c"
          ],
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              "version": "6.6.58",
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            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.5",
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            },
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        }
      ],
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    }
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  "configurations": [
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  ],
  "cveTags": [],
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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Fix incorrect pci_for_each_dma_alias() for non-PCI devices\n\nPreviously, the domain_context_clear() function incorrectly called\npci_for_each_dma_alias() to set up context entries for non-PCI devices.\nThis could lead to kernel hangs or other unexpected behavior.\n\nAdd a check to only call pci_for_each_dma_alias() for PCI devices. For\nnon-PCI devices, domain_context_clear_one() is called directly."
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/vt-d: Se corrige pci_for_each_dma_alias() incorrecto para dispositivos que no sean PCI Anteriormente, la funci\u00f3n domain_context_clear() llamaba incorrectamente a pci_for_each_dma_alias() para configurar entradas de contexto para dispositivos que no sean PCI. Esto podr\u00eda provocar bloqueos del kernel u otro comportamiento inesperado. Agregue una verificaci\u00f3n para llamar solo a pci_for_each_dma_alias() para dispositivos PCI. Para dispositivos que no sean PCI, se llama a domain_context_clear_one() directamente."
    }
  ],
  "id": "CVE-2024-50101",
  "lastModified": "2026-08-04T11:21:19.950",
  "metrics": {
    "cvssMetricV31": [
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
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          "userInteraction": "NONE",
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            },
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            },
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          "role": "CISA Coordinator",
          "timestamp": "2025-10-01T20:22:32.500340Z",
          "version": "2.0.3"
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  "published": "2024-11-05T18:15:13.813",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
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  ]
}

CVE-2024-50101 (GCVE-0-2024-50101)

Vulnerability from cvelistv5 – Published: 2024-11-05 17:07 – Updated: 2026-08-05 11:41

Title

iommu/vt-d: Fix incorrect pci_for_each_dma_alias() for non-PCI devices

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 20:22 UTC

CWE

CWE-noinfo Not enough information

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7033 records in the last 180 days details

References

6 references

URL	Tags
https://git.kernel.org/stable/c/0bd9a30c22afb5da2…
https://git.kernel.org/stable/c/cbfa3a83eba05240c…
https://git.kernel.org/stable/c/fe2e0b6cd00abea3e…
https://git.kernel.org/stable/c/04d6826ba7ba81213…
https://git.kernel.org/stable/c/6e02a277f1db24fa0…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 9807860f6ad446459d0446550cf4a2dc23bbee6c , < 0bd9a30c22afb5da203386b811ec31429d2caa78 (git) Affected: 59862b869275c27beb25cda2054b59a8b5d04970 , < cbfa3a83eba05240ce37839ed48280a05e8e8f6c (git) Affected: 48f2183a4f9d3540fc5cfc8f8451621ee92c09f8 , < fe2e0b6cd00abea3efac66de1da22d844364c1b0 (git) Affected: 9a16ab9d640274b20813d2d17475e18d3e99d834 , < 04d6826ba7ba81213422276e96c90c6565169e1c (git) Affected: 9a16ab9d640274b20813d2d17475e18d3e99d834 , < 6e02a277f1db24fa039e23783c8921c7b0e5b1b3 (git) Affected: 5.15.142 , < 5.15.169 (semver) Affected: 6.1.66 , < 6.1.114 (semver) Affected: 6.6.5 , < 6.6.58 (semver)
Linux	Linux	Affected: 6.7 Unaffected: 0 , < 6.7 (semver) Unaffected: 5.15.169 , ≤ 5.15.* (semver) Unaffected: 6.1.114 , ≤ 6.1.* (semver) Unaffected: 6.6.58 , ≤ 6.6.* (semver) Unaffected: 6.11.5 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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            }
          },
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                "options": [
                  {
                    "Exploitation": "none"
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                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:22:32.500340Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:27:18.620Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:25:32.555Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "programFiles": [
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              "status": "unaffected",
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              "status": "unaffected",
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                  "versionEndExcluding": "6.1.114",
                  "versionStartIncluding": "6.1.66",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.58",
                  "versionStartIncluding": "6.6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.5",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Fix incorrect pci_for_each_dma_alias() for non-PCI devices\n\nPreviously, the domain_context_clear() function incorrectly called\npci_for_each_dma_alias() to set up context entries for non-PCI devices.\nThis could lead to kernel hangs or other unexpected behavior.\n\nAdd a check to only call pci_for_each_dma_alias() for PCI devices. For\nnon-PCI devices, domain_context_clear_one() is called directly."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable path is reached only through local IOMMU domain attach/detach operations (device probe/removal, driver bind/unbind, iommu_group type change, VFIO/iommufd device attach); there is no network or remote-peer input involved.\nAC:L - The type confusion is deterministic \u2014 every attach/detach of a non-PCI (ACPI-namespace/platform) device on an Intel VT-d IOMMU takes the bogus `to_pci_dev()` branch, with no race to win and no memory-layout condition to satisfy. CONFIG_INTEL_IOMMU is default-on in distro x86_64 kernels and ANDD/ACPI-namespace devices in DMAR scope are common on Intel client platforms, as the two independent bugzilla reports show.\nPR:L - Reaching the domain attach/detach path requires local access to device-management interfaces rather than any remote authentication, consistent with the PR:L scoring used for comparable VT-d attach/detach defects (CVE-2024-56668, CVE-2024-56669). No credential verification protects the code itself once the attach/detach operation is issued.\nUI:N - The faulty branch executes automatically as part of IOMMU domain attach/detach and device probe/release; no victim action such as opening a file or mounting a filesystem is needed.\nS:U - The corruption is confined to the kernel\u0027s own IOMMU bookkeeping and heap. Clearing a context entry sets Present=0, which blocks DMA (fail-closed) rather than granting a device unrestricted access, so no IOMMU/DMA security boundary is crossed.\nC:H - The fabricated `struct pci_dev` causes unbounded out-of-bounds reads of kernel heap memory adjacent to the platform device, which are then chased as pointers (`pdev-\u003ebus-\u003enumber`, `bus-\u003eself`, `bus-\u003eparent`, `tmp-\u003esubordinate-\u003enumber`), giving an unconstrained kernel-memory read primitive rather than a few bounded bytes.\nI:H - This is a type confusion in which out-of-bounds-read garbage selects which IOMMU context entries get zeroed, silently tearing down DMA translation for unrelated devices and corrupting in-flight DMA for them; per type-confusion/memory-corruption guidance this warrants High.\nA:H - The upstream commit states the bug \"could lead to kernel hangs,\" and the code confirms both an unterminated walk of a fabricated `pci_bus` parent chain (hang) and wild pointer dereferences (oops) on affected hardware, in some configurations during boot-time device probe."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:41:41.330Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0bd9a30c22afb5da203386b811ec31429d2caa78"
        },
        {
          "url": "https://git.kernel.org/stable/c/cbfa3a83eba05240ce37839ed48280a05e8e8f6c"
        },
        {
          "url": "https://git.kernel.org/stable/c/fe2e0b6cd00abea3efac66de1da22d844364c1b0"
        },
        {
          "url": "https://git.kernel.org/stable/c/04d6826ba7ba81213422276e96c90c6565169e1c"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e02a277f1db24fa039e23783c8921c7b0e5b1b3"
        }
      ],
      "title": "iommu/vt-d: Fix incorrect pci_for_each_dma_alias() for non-PCI devices",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50101",
    "datePublished": "2024-11-05T17:07:38.695Z",
    "dateReserved": "2024-10-21T19:36:19.946Z",
    "dateUpdated": "2026-08-05T11:41:41.330Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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