Vulnerability-Lookup

FKIE_CVE-2021-4150

Vulnerability from fkie_nvd - Published: 2022-03-23 20:15 - Updated: 2026-06-17 04:19

Severity

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

Summary

A use-after-free flaw was found in the add_partition in block/partitions/core.c in the Linux kernel. A local attacker with user privileges could cause a denial of service on the system. The issue results from the lack of code cleanup when device_add call fails when adding a partition to the disk.

References

URL	Tags
secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=2025938	Issue Tracking, Third Party Advisory
secalert@redhat.com	https://lkml.org/lkml/2021/10/18/485	Exploit, Third Party Advisory
secalert@redhat.com	https://lkml.org/lkml/2021/9/6/781	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://bugzilla.redhat.com/show_bug.cgi?id=2025938	Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lkml.org/lkml/2021/10/18/485	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lkml.org/lkml/2021/9/6/781	Exploit, Third Party Advisory

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	5.15
linux	linux_kernel	5.15
linux	linux_kernel	5.15
linux	linux_kernel	5.15
linux	linux_kernel	5.15
linux	linux_kernel	5.15
linux	linux_kernel	5.15

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "kernel",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "kernel 5.15 rc7"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
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      "nodes": [
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              "versionEndExcluding": "5.15",
              "vulnerable": true
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A use-after-free flaw was found in the add_partition in block/partitions/core.c in the Linux kernel. A local attacker with user privileges could cause a denial of service on the system. The issue results from the lack of code cleanup when device_add call fails when adding a partition to the disk."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un fallo de uso de memoria previamente liberada en la funci\u00f3n add_partition en el archivo block/partitions/core.c en el kernel de Linux. Un atacante local con privilegios de usuario podr\u00eda causar una denegaci\u00f3n de servicio en el sistema. El problema es debido a una falta de saneo del c\u00f3digo cuando la llamada device_add falla cuando es a\u00f1adida una partici\u00f3n al disco"
    }
  ],
  "id": "CVE-2021-4150",
  "lastModified": "2026-06-17T04:19:07.437",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 4.9,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
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          "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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        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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    ]
  },
  "published": "2022-03-23T20:15:10.050",
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      "tags": [
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        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2025938"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
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      ],
      "url": "https://lkml.org/lkml/2021/10/18/485"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-4150 (GCVE-0-2021-4150)

Vulnerability from cvelistv5 – Published: 2022-03-23 19:46 – Updated: 2024-08-03 17:16

Summary

Severity

No CVSS data available.

CWE

CWE-416

Assigner

redhat redhat root Scorecard

References

3 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2025938	x_refsource_MISC
https://lkml.org/lkml/2021/10/18/485	x_refsource_MISC
https://lkml.org/lkml/2021/9/6/781	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	kernel	Affected: kernel 5.15 rc7

Show details on NVD website

JSON

To clipboard

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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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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FKIE_CVE-2021-4150

CVE-2021-4150 (GCVE-0-2021-4150)

Tags

Sightings

Nomenclature

Related by attack behaviour