Vulnerability-Lookup

OESA-2021-1318 (CVE-2021-3679)

Vulnerability from osv_openeuler – Published: 2021-08-20 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 lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.(CVE-2021-3679)

drivers/usb/host/max3421-hcd.c in the Linux kernel before 5.13.6 allows physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations.(CVE-2021-38204)

drivers/net/ethernet/xilinx/xilinx_emaclite.c in the Linux kernel before 5.13.3 makes it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer).(CVE-2021-38205)

net/netfilter/nf_conntrack_standalone.c in the Linux kernel before 5.12.2 allows observation of changes in any net namespace because these changes are leaked into all other net namespaces. This is related to the NF_SYSCTL_CT_MAX, NF_SYSCTL_CT_EXPECT_MAX, and NF_SYSCTL_CT_BUCKETS sysctls.(CVE-2021-38209)

fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for those servers to be unreachable during trunking detection.(CVE-2021-38199)

drivers/net/ethernet/xilinx/ll_temac_main.c in the Linux kernel before 5.12.13 allows remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes.(CVE-2021-38207)

net/nfc/llcp_sock.c in the Linux kernel before 5.12.10 allows local unprivileged users to cause a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call.(CVE-2021-38208)

Severity

7.8 (High)


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

References

URL

Type

	https://openeuler.org/en/security/safety-bulletin…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-3679	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-38204	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-38205	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-38209	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-38199	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-38207	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-38208	ADVISORY

JSON

To clipboard

{
  "affected": [
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      "ecosystem_specific": {
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  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\r\n\r\nA lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.(CVE-2021-3679)\r\n\r\ndrivers/usb/host/max3421-hcd.c in the Linux kernel before 5.13.6 allows physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations.(CVE-2021-38204)\r\n\r\ndrivers/net/ethernet/xilinx/xilinx_emaclite.c in the Linux kernel before 5.13.3 makes it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer).(CVE-2021-38205)\r\n\r\nnet/netfilter/nf_conntrack_standalone.c in the Linux kernel before 5.12.2 allows observation of changes in any net namespace because these changes are leaked into all other net namespaces. This is related to the NF_SYSCTL_CT_MAX, NF_SYSCTL_CT_EXPECT_MAX, and NF_SYSCTL_CT_BUCKETS sysctls.(CVE-2021-38209)\r\n\r\nfs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for those servers to be unreachable during trunking detection.(CVE-2021-38199)\r\n\r\ndrivers/net/ethernet/xilinx/ll_temac_main.c in the Linux kernel before 5.12.13 allows remote attackers to cause a denial of service (buffer overflow and lockup) by sending heavy network traffic for about ten minutes.(CVE-2021-38207)\r\n\r\nnet/nfc/llcp_sock.c in the Linux kernel before 5.12.10 allows local unprivileged users to cause a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call.(CVE-2021-38208)",
  "id": "OESA-2021-1318",
  "modified": "2026-08-06T11:04:33Z",
  "published": "2021-08-20T11:04:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1318"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3679"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-38204"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-38205"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-38209"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-38199"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-38207"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-38208"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kernel security update",
  "upstream": [
    "CVE-2021-3679",
    "CVE-2021-38204",
    "CVE-2021-38205",
    "CVE-2021-38209",
    "CVE-2021-38199",
    "CVE-2021-38207",
    "CVE-2021-38208"
  ]
}

CVE-2021-3679 (GCVE-0-2021-3679)

Vulnerability from cvelistv5 – Published: 2021-08-05 19:54 – Updated: 2024-08-03 17:01

Summary

Severity

No CVSS data available.

CWE

CWE-400

Assigner

redhat redhat root

References

5 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1989165	x_refsource_MISC
https://git.kernel.org/pub/scm/linux/kernel/git/t…	x_refsource_MISC
https://www.debian.org/security/2021/dsa-4978	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version
n/a	kernel	Affected: kernel 5.14-rc3

Show details on NVD website

JSON

To clipboard

{
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          "dateUpdated": "2024-08-03T17:01:08.334Z",
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  "dataVersion": "5.1"
}

CVE-2021-38199 (GCVE-0-2021-38199)

Vulnerability from cvelistv5 – Published: 2021-08-08 19:27 – Updated: 2024-08-04 01:37

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

6 references

URL	Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…	x_refsource_MISC
https://github.com/torvalds/linux/commit/dd99e9f9…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021090…	x_refsource_CONFIRM
https://www.debian.org/security/2021/dsa-4978	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
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Show details on NVD website

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CVE-2021-38204 (GCVE-0-2021-38204)

Vulnerability from cvelistv5 – Published: 2021-08-08 19:25 – Updated: 2024-08-04 01:37

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://github.com/torvalds/linux/commit/b5fdf5c6…	x_refsource_MISC
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

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CVE-2021-38205 (GCVE-0-2021-38205)

Vulnerability from cvelistv5 – Published: 2021-08-08 19:23 – Updated: 2024-08-04 01:37

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://github.com/torvalds/linux/commit/d0d62baa…	x_refsource_MISC
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

To clipboard

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CVE-2021-38207 (GCVE-0-2021-38207)

Vulnerability from cvelistv5 – Published: 2021-08-08 19:22 – Updated: 2024-08-04 01:37

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…	x_refsource_MISC
https://github.com/torvalds/linux/commit/c364df24…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021090…	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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CVE-2021-38208 (GCVE-0-2021-38208)

Vulnerability from cvelistv5 – Published: 2021-08-08 19:22 – Updated: 2024-08-04 01:37

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

6 references

URL	Tags
https://github.com/torvalds/linux/commit/4ac06a1e…	x_refsource_MISC
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/08/17/1	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/08/17/2	mailing-listx_refsource_MLIST
https://bugzilla.redhat.com/show_bug.cgi?id=1992810	x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2021/08/24/2	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

To clipboard

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CVE-2021-38209 (GCVE-0-2021-38209)

Vulnerability from cvelistv5 – Published: 2021-08-08 19:21 – Updated: 2024-08-04 01:37

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
https://github.com/torvalds/linux/commit/2671fa4d…	x_refsource_MISC
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…	x_refsource_MISC

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-2021-1318 (CVE-2021-3679)

CVE-2021-3679 (GCVE-0-2021-3679)

CVE-2021-38199 (GCVE-0-2021-38199)

CVE-2021-38204 (GCVE-0-2021-38204)

CVE-2021-38205 (GCVE-0-2021-38205)

CVE-2021-38207 (GCVE-0-2021-38207)

CVE-2021-38208 (GCVE-0-2021-38208)

CVE-2021-38209 (GCVE-0-2021-38209)

Tags

Sightings

Nomenclature

Related by attack behaviour