Vulnerability-Lookup

CNVD-2017-04114

Vulnerability from cnvd - Published: 2017-04-09

Title

Linux kernel竞争条件漏洞

Description

Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。 Linux kernel 4.10.2及之前的版本中的kernel/ucount.c文件存在竞争条件漏洞。本地攻击者可借助特制的系统调用利用该漏洞造成拒绝服务（释放后重用和系统崩溃）。

Severity

中

Patch Name

Linux kernel竞争条件漏洞的补丁

Patch Description

Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。 Linux kernel 4.10.2及之前的版本中的kernel/ucount.c文件存在竞争条件漏洞。本地攻击者可借助特制的系统调用利用该漏洞造成拒绝服务（释放后重用和系统崩溃）。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

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接： https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=040757f738e13caaa9c5078bca79aa97e11dde88

Reference

https://github.com/torvalds/linux/commit/040757f738e13caaa9c5078bca79aa97e11dde88 http://www.securityfocus.com/bid/96856

Impacted products

Name
Linux Kernel <=4.10.2

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "96856"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-6874",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6874"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.10.2\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684kernel/ucount.c\u6587\u4ef6\u5b58\u5728\u7ade\u4e89\u6761\u4ef6\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684\u7cfb\u7edf\u8c03\u7528\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u91ca\u653e\u540e\u91cd\u7528\u548c\u7cfb\u7edf\u5d29\u6e83\uff09\u3002",
  "discovererName": "JongWhan Kim and Dmitry Vyukov",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=040757f738e13caaa9c5078bca79aa97e11dde88",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-04114",
  "openTime": "2017-04-09",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.10.2\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684kernel/ucount.c\u6587\u4ef6\u5b58\u5728\u7ade\u4e89\u6761\u4ef6\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684\u7cfb\u7edf\u8c03\u7528\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u91ca\u653e\u540e\u91cd\u7528\u548c\u7cfb\u7edf\u5d29\u6e83\uff09\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Linux kernel\u7ade\u4e89\u6761\u4ef6\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel \u003c=4.10.2"
  },
  "referenceLink": "https://github.com/torvalds/linux/commit/040757f738e13caaa9c5078bca79aa97e11dde88\r\nhttp://www.securityfocus.com/bid/96856",
  "serverity": "\u4e2d",
  "submitTime": "2017-03-16",
  "title": "Linux kernel\u7ade\u4e89\u6761\u4ef6\u6f0f\u6d1e"
}

CVE-2017-6874 (GCVE-0-2017-6874)

Vulnerability from cvelistv5 – Published: 2017-03-14 09:02 – Updated: 2024-08-05 15:41

Summary

Race condition in kernel/ucount.c in the Linux kernel through 4.10.2 allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls that leverage certain decrement behavior that causes incorrect interaction between put_ucounts and get_ucounts.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
http://git.kernel.org/cgit/linux/kernel/git/torva…	x_refsource_CONFIRM
http://www.securityfocus.com/bid/96856	vdb-entryx_refsource_BID
https://github.com/torvalds/linux/commit/040757f7…	x_refsource_CONFIRM

Date Public

2017-03-05 00:00

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.