Vulnerability-Lookup

CNVD-2019-47004

Vulnerability from cnvd - Published: 2019-12-26

Title

Linux kernel kernel/sched/fair.c文件拒绝服务漏洞

Description

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 5.3.9之前版本中的kernel/sched/fair.c文件存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。

Severity

中

Patch Name

Linux kernel kernel/sched/fair.c文件拒绝服务漏洞的补丁

Patch Description

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 5.3.9之前版本中的kernel/sched/fair.c文件存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de53fd7aedb100f03e5d2231cfce0e4993282425

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-19922

Impacted products

Name
Linux Linux kernel <5.3.9

Show details on source website

JSON

To clipboard

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      "cveNumber": "CVE-2019-19922"
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  "submitTime": "2019-12-23",
  "title": "Linux kernel kernel/sched/fair.c\u6587\u4ef6\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2019-19922 (GCVE-0-2019-19922)

Vulnerability from cvelistv5 – Published: 2019-12-22 19:07 – Updated: 2024-08-05 02:32

Summary

kernel/sched/fair.c in the Linux kernel before 5.3.9, when cpu.cfs_quota_us is used (e.g., with Kubernetes), allows attackers to cause a denial of service against non-cpu-bound applications by generating a workload that triggers unwanted slice expiration, aka CID-de53fd7aedb1. (In other words, although this slice expiration would typically be seen with benign workloads, it is possible that an attacker could calculate how many stray requests are required to force an entire Kubernetes cluster into a low-performance state caused by slice expiration, and ensure that a DDoS attack sent that number of stray requests. An attack does not affect the stability of the kernel; it only causes mismanagement of application execution.)

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

9 references

URL	Tags
https://usn.ubuntu.com/4226-1/	vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://www.oracle.com/security-alerts/cpuApr2021.html	x_refsource_MISC
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…	x_refsource_MISC
https://github.com/torvalds/linux/commit/de53fd7a…	x_refsource_MISC
https://git.kernel.org/cgit/linux/kernel/git/torv…	x_refsource_MISC
https://relistan.com/the-kernel-may-be-slowing-do…	x_refsource_MISC
https://github.com/kubernetes/kubernetes/issues/67577	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2020020…	x_refsource_CONFIRM

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

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