Vulnerability-Lookup

FKIE_CVE-2024-56624

Vulnerability from fkie_nvd - Published: 2024-12-27 15:15 - Updated: 2026-10-15 22:18

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: iommufd: Fix out_fput in iommufd_fault_alloc() As fput() calls the file->f_op->release op, where fault obj and ictx are getting released, there is no need to release these two after fput() one more time, which would result in imbalanced refcounts: refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 48 PID: 2369 at lib/refcount.c:31 refcount_warn_saturate+0x60/0x230 Call trace: refcount_warn_saturate+0x60/0x230 (P) refcount_warn_saturate+0x60/0x230 (L) iommufd_fault_fops_release+0x9c/0xe0 [iommufd] ... VFS: Close: file count is 0 (f_op=iommufd_fops [iommufd]) WARNING: CPU: 48 PID: 2369 at fs/open.c:1507 filp_flush+0x3c/0xf0 Call trace: filp_flush+0x3c/0xf0 (P) filp_flush+0x3c/0xf0 (L) __arm64_sys_close+0x34/0x98 ... imbalanced put on file reference count WARNING: CPU: 48 PID: 2369 at fs/file.c:74 __file_ref_put+0x100/0x138 Call trace: __file_ref_put+0x100/0x138 (P) __file_ref_put+0x100/0x138 (L) __fput_sync+0x4c/0xd0 Drop those two lines to fix the warnings above.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2b3f30c8edbf9a122ce01f13f0f41fbca5f1d41d	Patch
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/af7f4780514f850322b2959032ecaa96e4b26472	Patch

Impacted products

	Vendor	Product	Version
	linux	linux_kernel	*
	linux	linux_kernel	6.13

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/fault.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "07838f7fd529c8a6de44b601d4b7057e6c8d36ed",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/fault.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "version": "6.11"
            },
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            },
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              "version": "6.12.5",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "versionEndExcluding": "6.12.5",
              "versionStartIncluding": "6.11",
              "vulnerable": true
            },
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Fix out_fput in iommufd_fault_alloc()\n\nAs fput() calls the file-\u003ef_op-\u003erelease op, where fault obj and ictx are\ngetting released, there is no need to release these two after fput() one\nmore time, which would result in imbalanced refcounts:\n  refcount_t: decrement hit 0; leaking memory.\n  WARNING: CPU: 48 PID: 2369 at lib/refcount.c:31 refcount_warn_saturate+0x60/0x230\n  Call trace:\n   refcount_warn_saturate+0x60/0x230 (P)\n   refcount_warn_saturate+0x60/0x230 (L)\n   iommufd_fault_fops_release+0x9c/0xe0 [iommufd]\n  ...\n  VFS: Close: file count is 0 (f_op=iommufd_fops [iommufd])\n  WARNING: CPU: 48 PID: 2369 at fs/open.c:1507 filp_flush+0x3c/0xf0\n  Call trace:\n   filp_flush+0x3c/0xf0 (P)\n   filp_flush+0x3c/0xf0 (L)\n   __arm64_sys_close+0x34/0x98\n  ...\n  imbalanced put on file reference count\n  WARNING: CPU: 48 PID: 2369 at fs/file.c:74 __file_ref_put+0x100/0x138\n  Call trace:\n   __file_ref_put+0x100/0x138 (P)\n   __file_ref_put+0x100/0x138 (L)\n   __fput_sync+0x4c/0xd0\n\nDrop those two lines to fix the warnings above."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommufd: Arreglar out_fput en iommufd_fault_alloc() Como fput() llama a la operaci\u00f3n file-\u0026gt;f_op-\u0026gt;release, donde se liberan los objetos de falla y ictx, no hay necesidad de liberar estos dos despu\u00e9s de fput() una vez m\u00e1s, lo que dar\u00eda como resultado recuentos de referencias desequilibrados: refcount_t: el decremento llega a 0; p\u00e9rdida de memoria. ADVERTENCIA: CPU: 48 PID: 2369 en lib/refcount.c:31 refcount_warn_saturate+0x60/0x230 Rastreo de llamadas: refcount_warn_saturate+0x60/0x230 (P) refcount_warn_saturate+0x60/0x230 (L) iommufd_fault_fops_release+0x9c/0xe0 [iommufd] ... VFS: Cerrar: el recuento de archivos es 0 (f_op=iommufd_fops [iommufd]) ADVERTENCIA: CPU: 48 PID: 2369 en fs/open.c:1507 filp_flush+0x3c/0xf0 Rastreo de llamadas: filp_flush+0x3c/0xf0 (P) filp_flush+0x3c/0xf0 (L) __arm64_sys_close+0x34/0x98 ... desequilibrado en el recuento de referencias de archivo ADVERTENCIA: CPU: 48 PID: 2369 en fs/file.c:74 __file_ref_put+0x100/0x138 Rastreo de llamadas: __file_ref_put+0x100/0x138 (P) __file_ref_put+0x100/0x138 (L) __fput_sync+0x4c/0xd0 Omita esas dos l\u00edneas para corregir las advertencias anteriores."
    }
  ],
  "id": "CVE-2024-56624",
  "lastModified": "2026-10-15T22:18:01.677",
  "metrics": {
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          "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",
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        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
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          "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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        "source": "nvd@nist.gov",
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        "ssvcData": {
          "id": "CVE-2024-56624",
          "options": [
            {
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            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-15T21:41:07.307658Z",
          "version": "2.0.3"
        }
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  "published": "2024-12-27T15:15:21.933",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-56624 (GCVE-0-2024-56624)

Vulnerability from cvelistv5 – Published: 2024-12-27 14:51 – Updated: 2026-10-15 21:41

Title

iommufd: Fix out_fput in iommufd_fault_alloc()

Summary

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-15 21:41 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7018 records in the last 180 days details

References

2 references

URL	Tags
https://git.kernel.org/stable/c/2b3f30c8edbf9a122…
https://git.kernel.org/stable/c/af7f4780514f85032…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 07838f7fd529c8a6de44b601d4b7057e6c8d36ed , < 2b3f30c8edbf9a122ce01f13f0f41fbca5f1d41d (git) Affected: 07838f7fd529c8a6de44b601d4b7057e6c8d36ed , < af7f4780514f850322b2959032ecaa96e4b26472 (git)
Linux	Linux	Affected: 6.11 Unaffected: 0 , < 6.11 (semver) Unaffected: 6.12.5 , ≤ 6.12.* (semver) Unaffected: 6.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-56624",
                "options": [
                  {
                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-15T21:41:07.307658Z",
                "version": "2.0.3"
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          "dateUpdated": "2026-10-15T21:41:47.207Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/fault.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "versionType": "git"
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            {
              "lessThan": "af7f4780514f850322b2959032ecaa96e4b26472",
              "status": "affected",
              "version": "07838f7fd529c8a6de44b601d4b7057e6c8d36ed",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          "versions": [
            {
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            },
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        "dateUpdated": "2026-08-05T11:45:30.290Z",
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    "cveId": "CVE-2024-56624",
    "datePublished": "2024-12-27T14:51:27.318Z",
    "dateReserved": "2024-12-27T14:03:06.017Z",
    "dateUpdated": "2026-10-15T21:41:47.207Z",
    "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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