Vulnerability-Lookup

FKIE_CVE-2025-21842

Vulnerability from fkie_nvd - Published: 2025-03-07 09:15 - Updated: 2026-07-30 06:21

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

Summary

In the Linux kernel, the following vulnerability has been resolved: amdkfd: properly free gang_ctx_bo when failed to init user queue The destructor of a gtt bo is declared as void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, void **mem_obj); Which takes void** as the second parameter. GCC allows passing void* to the function because void* can be implicitly casted to any other types, so it can pass compiling. However, passing this void* parameter into the function's execution process(which expects void** and dereferencing void**) will result in errors.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/091a68c58c1bbd2ab7d05d1b32c1306394ec691d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a33f7f9660705fb2ecf3467b2c48965564f392ce	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ae5ab1c1ae504f622cc1ff48830a9ed48428146d	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.14
linux	linux_kernel	6.14

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ae5ab1c1ae504f622cc1ff48830a9ed48428146d",
              "status": "affected",
              "version": "fb91065851cd5f2735348c5f3eddeeca3d7c2973",
              "versionType": "git"
            },
            {
              "lessThan": "091a68c58c1bbd2ab7d05d1b32c1306394ec691d",
              "status": "affected",
              "version": "fb91065851cd5f2735348c5f3eddeeca3d7c2973",
              "versionType": "git"
            },
            {
              "lessThan": "a33f7f9660705fb2ecf3467b2c48965564f392ce",
              "status": "affected",
              "version": "fb91065851cd5f2735348c5f3eddeeca3d7c2973",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "537F3B42-2EC5-47FB-8166-5ACF0353AFEC",
              "versionEndExcluding": "6.12.16",
              "versionStartIncluding": "6.12",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2A2093ED-74A9-43F9-AC72-50030F374EA4",
              "versionEndExcluding": "6.13.4",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "186716B6-2B66-4BD0-852E-D48E71C0C85F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "0D3E781C-403A-498F-9DA9-ECEE50F41E75",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\namdkfd: properly free gang_ctx_bo when failed to init user queue\n\nThe destructor of a gtt bo is declared as\nvoid amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, void **mem_obj);\nWhich takes void** as the second parameter.\n\nGCC allows passing void* to the function because void* can be implicitly\ncasted to any other types, so it can pass compiling.\n\nHowever, passing this void* parameter into the function\u0027s\nexecution process(which expects void** and dereferencing void**)\nwill result in errors."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: amdkfd: libera correctamente gang_ctx_bo cuando no se puede inicializar la cola de usuarios El destructor de un bo gtt se declara como void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, void **mem_obj); que toma void** como segundo par\u00e1metro. GCC permite pasar void* a la funci\u00f3n porque void* se puede convertir impl\u00edcitamente a cualquier otro tipo, por lo que puede pasar la compilaci\u00f3n. Sin embargo, pasar este par\u00e1metro void* al proceso de ejecuci\u00f3n de la funci\u00f3n (que espera void** y desreferenciar void**) dar\u00e1 como resultado errores."
    }
  ],
  "id": "CVE-2025-21842",
  "lastModified": "2026-07-30T06:21:40.627",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "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",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-03-07T09:15:17.237",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/091a68c58c1bbd2ab7d05d1b32c1306394ec691d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a33f7f9660705fb2ecf3467b2c48965564f392ce"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ae5ab1c1ae504f622cc1ff48830a9ed48428146d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-21842 (GCVE-0-2025-21842)

Vulnerability from cvelistv5 – Published: 2025-03-07 09:10 – Updated: 2026-08-05 11:54

Title

amdkfd: properly free gang_ctx_bo when failed to init user queue

Summary

Severity

7.8 (High)


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

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7063 records in the last 180 days details

References

3 references

URL	Tags
https://git.kernel.org/stable/c/ae5ab1c1ae504f622…
https://git.kernel.org/stable/c/091a68c58c1bbd2ab…
https://git.kernel.org/stable/c/a33f7f9660705fb2e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: fb91065851cd5f2735348c5f3eddeeca3d7c2973 , < ae5ab1c1ae504f622cc1ff48830a9ed48428146d (git) Affected: fb91065851cd5f2735348c5f3eddeeca3d7c2973 , < 091a68c58c1bbd2ab7d05d1b32c1306394ec691d (git) Affected: fb91065851cd5f2735348c5f3eddeeca3d7c2973 , < a33f7f9660705fb2ecf3467b2c48965564f392ce (git)
Linux	Linux	Affected: 6.12 Unaffected: 0 , < 6.12 (semver) Unaffected: 6.12.16 , ≤ 6.12.* (semver) Unaffected: 6.13.4 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ae5ab1c1ae504f622cc1ff48830a9ed48428146d",
              "status": "affected",
              "version": "fb91065851cd5f2735348c5f3eddeeca3d7c2973",
              "versionType": "git"
            },
            {
              "lessThan": "091a68c58c1bbd2ab7d05d1b32c1306394ec691d",
              "status": "affected",
              "version": "fb91065851cd5f2735348c5f3eddeeca3d7c2973",
              "versionType": "git"
            },
            {
              "lessThan": "a33f7f9660705fb2ecf3467b2c48965564f392ce",
              "status": "affected",
              "version": "fb91065851cd5f2735348c5f3eddeeca3d7c2973",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                  "vulnerable": true
                },
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                },
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14",
                  "versionStartIncluding": "6.12",
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                }
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        }
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          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is reached through the AMDKFD_IOC_CREATE_QUEUE ioctl on the local /dev/kfd character device; there is no network vector.\nAC:L - The attacker controls the trigger \u2014 supplying a wptr buffer allocated on a different GPU deterministically hits the device-mismatch error path on multi-GPU systems, or GART/pin exhaustion forces the map failure; no uncontrollable condition is required.\nPR:L - The create-queue ioctl carries flags=0 with no capability check, so any unprivileged local user with render-group access to /dev/kfd (typical on desktops/workstations) can reach it.\nUI:N - Exploitation is a direct ioctl sequence from the attacker\u0027s own process with no victim action required.\nS:U - The invalid dereference and any resulting corruption occur within the kernel\u0027s own security authority; no privilege/isolation boundary such as a VM or IOMMU domain is crossed.\nC:H - This pointer-vs-pointer-to-pointer type confusion dereferences a fixed userspace-mappable address (0x200000002); on non-SMAP/PAN or nosmap systems the attacker can back that address with a crafted fake amdgpu_bo, yielding attacker-controlled kernel reads.\nI:H - The same crafted-object primitive feeds amdgpu_bo unpin/unref, which perform refcount decrements and destructor dispatch on the attacker-controlled structure, enabling kernel memory corruption and potential control-flow hijack.\nA:H - On the common case (SMAP enabled) the wild dereference of 0x200000002 faults immediately, producing a kernel oops/panic and denial of service."
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        {
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    "datePublished": "2025-03-07T09:10:00.298Z",
    "dateReserved": "2024-12-29T08:45:45.777Z",
    "dateUpdated": "2026-08-05T11:54:51.838Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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

Sightings and recorded dates, grouped by day · UTC

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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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