Vulnerability-Lookup

FKIE_CVE-2026-31399

Vulnerability from fkie_nvd - Published: 2026-04-03 16:16 - Updated: 2026-07-24 22:10

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: nvdimm/bus: Fix potential use after free in asynchronous initialization Dingisoul with KASAN reports a use after free if device_add() fails in nd_async_device_register(). Commit b6eae0f61db2 ("libnvdimm: Hold reference on parent while scheduling async init") correctly added a reference on the parent device to be held until asynchronous initialization was complete. However, if device_add() results in an allocation failure the ref count of the device drops to 0 prior to the parent pointer being accessed. Thus resulting in use after free. The bug bot AI correctly identified the fix. Save a reference to the parent pointer to be used to drop the parent reference regardless of the outcome of device_add().

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2c638259ad750833fd46a0cf57672a618542d84c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6fc36c2a925ceaba203eb13d75a8f0879a2c121b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/84af19855d1abdee3c9d57c0684e2868e391793c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9a0fb16ba5b372465a3a1ecd761c6fa911a4ab4d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a226e5b49e5fe8c98b14f8507de670189d191348	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a36cf138500e56f50db9f9a33222df6969b38326	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a8aec14230322ed8f1e8042b6d656c1631d41163	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e48bf8f1d2b12c1c5ba1f609edbd4cde5dadc20e	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

{
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          "programFiles": [
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        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvdimm/bus: Fix potential use after free in asynchronous initialization\n\nDingisoul with KASAN reports a use after free if device_add() fails in\nnd_async_device_register().\n\nCommit b6eae0f61db2 (\"libnvdimm: Hold reference on parent while\nscheduling async init\") correctly added a reference on the parent device\nto be held until asynchronous initialization was complete.  However, if\ndevice_add() results in an allocation failure the ref count of the\ndevice drops to 0 prior to the parent pointer being accessed.  Thus\nresulting in use after free.\n\nThe bug bot AI correctly identified the fix.  Save a reference to the\nparent pointer to be used to drop the parent reference regardless of the\noutcome of device_add()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnvdimm/bus: Soluciona un posible uso despu\u00e9s de liberar en la inicializaci\u00f3n as\u00edncrona\n\nDingisoul con KASAN informa de un uso despu\u00e9s de liberar si device_add() falla en nd_async_device_register().\n\nEl commit b6eae0f61db2 (\u0027libnvdimm: Mantener referencia en el padre mientras se programa la inicializaci\u00f3n as\u00edncrona\u0027) a\u00f1adi\u00f3 correctamente una referencia en el dispositivo padre para ser mantenida hasta que la inicializaci\u00f3n as\u00edncrona estuviera completa. Sin embargo, si device_add() resulta en un fallo de asignaci\u00f3n, el contador de referencias del dispositivo cae a 0 antes de que se acceda al puntero padre. Resultando as\u00ed en un uso despu\u00e9s de liberar.\n\nLa IA del bot de errores identific\u00f3 correctamente la soluci\u00f3n. Guarda una referencia al puntero padre para ser utilizada para liberar la referencia padre independientemente del resultado de device_add()."
    }
  ],
  "id": "CVE-2026-31399",
  "lastModified": "2026-07-24T22:10:00.140",
  "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": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-04-03T16:16:38.410",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2c638259ad750833fd46a0cf57672a618542d84c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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      "tags": [
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      "url": "https://git.kernel.org/stable/c/9a0fb16ba5b372465a3a1ecd761c6fa911a4ab4d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a226e5b49e5fe8c98b14f8507de670189d191348"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a36cf138500e56f50db9f9a33222df6969b38326"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a8aec14230322ed8f1e8042b6d656c1631d41163"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e48bf8f1d2b12c1c5ba1f609edbd4cde5dadc20e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2026-31399 (GCVE-0-2026-31399)

Vulnerability from cvelistv5 – Published: 2026-04-03 15:16 – Updated: 2026-05-23 16:04

Title

nvdimm/bus: Fix potential use after free in asynchronous initialization

Summary

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/6fc36c2a925ceaba2…
https://git.kernel.org/stable/c/a36cf138500e56f50…
https://git.kernel.org/stable/c/9a0fb16ba5b372465…
https://git.kernel.org/stable/c/e48bf8f1d2b12c1c5…
https://git.kernel.org/stable/c/2c638259ad750833f…
https://git.kernel.org/stable/c/a226e5b49e5fe8c98…
https://git.kernel.org/stable/c/84af19855d1abdee3…
https://git.kernel.org/stable/c/a8aec14230322ed8f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < 6fc36c2a925ceaba203eb13d75a8f0879a2c121b (git) Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < a36cf138500e56f50db9f9a33222df6969b38326 (git) Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < 9a0fb16ba5b372465a3a1ecd761c6fa911a4ab4d (git) Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < e48bf8f1d2b12c1c5ba1f609edbd4cde5dadc20e (git) Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < 2c638259ad750833fd46a0cf57672a618542d84c (git) Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < a226e5b49e5fe8c98b14f8507de670189d191348 (git) Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < 84af19855d1abdee3c9d57c0684e2868e391793c (git) Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < a8aec14230322ed8f1e8042b6d656c1631d41163 (git) Affected: 8954771abdea5c34280870e35592c7226a816d95 (git) Affected: 3e63a7f25cc85d3d3e174b9b0e3489ebb7eaf4ab (git) Affected: 1490de2bb0836fc0631c04d0559fdf81545b672f (git) Affected: e31a8418c8df7e6771414f99ed3d95ba8aca4e05 (git) Affected: 4f1a55a4f990016406147cf3e0c9487bf83e50f0 (git) Affected: 4.4.164 , < 4.5 (semver) Affected: 4.9.137 , < 4.10 (semver) Affected: 4.14.81 , < 4.15 (semver) Affected: 4.18.19 , < 4.19 (semver) Affected: 4.19.2 , < 4.20 (semver)
Linux	Linux	Affected: 4.20 Unaffected: 0 , < 4.20 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.20 , ≤ 6.18.* (semver) Unaffected: 6.19.10 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvdimm/bus.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6fc36c2a925ceaba203eb13d75a8f0879a2c121b",
              "status": "affected",
              "version": "b6eae0f61db27748606cc00dafcfd1e2c032f0a5",
              "versionType": "git"
            },
            {
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            {
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            {
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            {
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "b6eae0f61db27748606cc00dafcfd1e2c032f0a5",
              "versionType": "git"
            },
            {
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              "version": "8954771abdea5c34280870e35592c7226a816d95",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3e63a7f25cc85d3d3e174b9b0e3489ebb7eaf4ab",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1490de2bb0836fc0631c04d0559fdf81545b672f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e31a8418c8df7e6771414f99ed3d95ba8aca4e05",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4f1a55a4f990016406147cf3e0c9487bf83e50f0",
              "versionType": "git"
            },
            {
              "lessThan": "4.5",
              "status": "affected",
              "version": "4.4.164",
              "versionType": "semver"
            },
            {
              "lessThan": "4.10",
              "status": "affected",
              "version": "4.9.137",
              "versionType": "semver"
            },
            {
              "lessThan": "4.15",
              "status": "affected",
              "version": "4.14.81",
              "versionType": "semver"
            },
            {
              "lessThan": "4.19",
              "status": "affected",
              "version": "4.18.19",
              "versionType": "semver"
            },
            {
              "lessThan": "4.20",
              "status": "affected",
              "version": "4.19.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvdimm/bus.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.20"
            },
            {
              "lessThan": "4.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.203",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.78",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.20",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.253",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.203",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.167",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.130",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.78",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.20",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.10",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.4.164",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.9.137",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.14.81",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.18.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.19.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvdimm/bus: Fix potential use after free in asynchronous initialization\n\nDingisoul with KASAN reports a use after free if device_add() fails in\nnd_async_device_register().\n\nCommit b6eae0f61db2 (\"libnvdimm: Hold reference on parent while\nscheduling async init\") correctly added a reference on the parent device\nto be held until asynchronous initialization was complete.  However, if\ndevice_add() results in an allocation failure the ref count of the\ndevice drops to 0 prior to the parent pointer being accessed.  Thus\nresulting in use after free.\n\nThe bug bot AI correctly identified the fix.  Save a reference to the\nparent pointer to be used to drop the parent reference regardless of the\noutcome of device_add()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T16:04:55.198Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6fc36c2a925ceaba203eb13d75a8f0879a2c121b"
        },
        {
          "url": "https://git.kernel.org/stable/c/a36cf138500e56f50db9f9a33222df6969b38326"
        },
        {
          "url": "https://git.kernel.org/stable/c/9a0fb16ba5b372465a3a1ecd761c6fa911a4ab4d"
        },
        {
          "url": "https://git.kernel.org/stable/c/e48bf8f1d2b12c1c5ba1f609edbd4cde5dadc20e"
        },
        {
          "url": "https://git.kernel.org/stable/c/2c638259ad750833fd46a0cf57672a618542d84c"
        },
        {
          "url": "https://git.kernel.org/stable/c/a226e5b49e5fe8c98b14f8507de670189d191348"
        },
        {
          "url": "https://git.kernel.org/stable/c/84af19855d1abdee3c9d57c0684e2868e391793c"
        },
        {
          "url": "https://git.kernel.org/stable/c/a8aec14230322ed8f1e8042b6d656c1631d41163"
        }
      ],
      "title": "nvdimm/bus: Fix potential use after free in asynchronous initialization",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31399",
    "datePublished": "2026-04-03T15:16:03.246Z",
    "dateReserved": "2026-03-09T15:48:24.085Z",
    "dateUpdated": "2026-05-23T16:04:55.198Z",
    "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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

FKIE_CVE-2026-31399

CVE-2026-31399 (GCVE-0-2026-31399)

Tags

Sightings

Nomenclature