Vulnerability-Lookup

OESA-2021-1453 (CVE-2021-3759)

Vulnerability from osv_openeuler – Published: 2021-12-07 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

kernel security update

Details

The Linux Kernel, the operating system core itself.

Security Fix(es):

A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.(CVE-2021-3759)

A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.(CVE-2021-3753)

Severity

5.5 (Medium)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-3759	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-3753	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "python2-perf-debuginfo-4.19.90-2111.7.0.0125.oe1.aarch64.rpm",
          "kernel-debuginfo-4.19.90-2111.7.0.0125.oe1.aarch64.rpm",
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          "kernel-source-4.19.90-2111.7.0.0125.oe1.aarch64.rpm",
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        ]
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      "package": {
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        "name": "kernel",
        "purl": "pkg:rpm/openEuler/kernel\u0026distro=openEuler-20.03-LTS-SP1"
      },
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          "python2-perf-4.19.90-2111.7.0.0124.oe1.aarch64.rpm",
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        ],
        "x86_64": [
          "kernel-tools-devel-4.19.90-2111.7.0.0124.oe1.x86_64.rpm",
          "kernel-devel-4.19.90-2111.7.0.0124.oe1.x86_64.rpm",
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      },
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    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "The Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\r\n\r\nA memory overflow vulnerability was found in the Linux kernel\u2019s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.(CVE-2021-3759)\r\n\r\nA race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.(CVE-2021-3753)",
  "id": "OESA-2021-1453",
  "modified": "2026-08-06T11:04:43Z",
  "published": "2021-12-07T11:04:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1453"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3759"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3753"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kernel security update",
  "upstream": [
    "CVE-2021-3759",
    "CVE-2021-3753"
  ]
}

CVE-2021-3753 (GCVE-0-2021-3753)

Vulnerability from cvelistv5 – Published: 2022-02-16 00:00 – Updated: 2024-08-03 17:09

Summary

Severity

No CVSS data available.

CWE

CWE-125

Assigner

redhat redhat root

References

4 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1999589
https://github.com/torvalds/linux/commit/2287a51b…
https://www.openwall.com/lists/oss-security/2021/…
https://security.netapp.com/advisory/ntap-2022102…

Impacted products

1 product

Vendor	Product	Version
n/a	kernel	Affected: Linux kernel 5.15-rc1

Show details on NVD website

JSON

To clipboard

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CVE-2021-3759 (GCVE-0-2021-3759)

Vulnerability from cvelistv5 – Published: 2022-08-23 00:00 – Updated: 2024-08-03 17:09

Summary

Severity

No CVSS data available.

CWE

CWE-400 - - Uncontrolled Resource Consumption

Assigner

redhat redhat root

References

4 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1999675
https://access.redhat.com/security/cve/CVE-2021-3759
https://lore.kernel.org/linux-mm/1626333284-1404-…
https://lists.debian.org/debian-lts-announce/2022…	mailing-list

Impacted products

1 product

Vendor	Product	Version
n/a	kernel	Affected: Fixed in Linux kernel 5.15-rc1

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.

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.
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.

Action not permitted

OESA-2021-1453 (CVE-2021-3759)

CVE-2021-3753 (GCVE-0-2021-3753)

CVE-2021-3759 (GCVE-0-2021-3759)

Tags

Sightings

Nomenclature

Related by attack behaviour