cnvd - cnvd-2021-21917

cnvd-2021-21917

Vulnerability from cnvd

Title: Linux kernel输入验证错误漏洞（CNVD-2021-21917）

Description:

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。

Linux kernel存在输入验证错误漏洞，攻击者可利用漏洞导致用户崩溃系统或可能升级他们的特权。

Severity: 中

Patch Name: Linux kernel输入验证错误漏洞（CNVD-2021-21917）的补丁

Patch Description:

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。

Linux kernel存在输入验证错误漏洞，攻击者可利用漏洞导致用户崩溃系统或可能升级他们的特权。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:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://bugzilla.redhat.com/show_bug.cgi?id=1923816

Reference: https://bugzilla.redhat.com/show_bug.cgi?id=1923816

Impacted products

Name
Linux kernel

Show details on source website

JSON

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    "cve": {
      "cveNumber": "CVE-2021-20268",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-20268"
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  "number": "CNVD-2021-21917",
  "openTime": "2021-03-22",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5bfc\u81f4\u7528\u6237\u5d29\u6e83\u7cfb\u7edf\u6216\u53ef\u80fd\u5347\u7ea7\u4ed6\u4eec\u7684\u7279\u6743\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\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2021-21917\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux kernel"
  },
  "referenceLink": "https://bugzilla.redhat.com/show_bug.cgi?id=1923816",
  "serverity": "\u4e2d",
  "submitTime": "2021-03-12",
  "title": "Linux kernel\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2021-21917\uff09"
}

CVE-2021-20268 (GCVE-0-2021-20268)

Vulnerability from cvelistv5

Published

2021-03-09 17:16

Modified

2024-08-03 17:37

Severity ?

CWE

CWE-20

Summary

An out-of-bounds access flaw was found in the Linux kernel's implementation of the eBPF code verifier in the way a user running the eBPF script calls dev_map_init_map or sock_map_alloc. This flaw allows a local user to crash the system or possibly escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1923816	x_refsource_MISC
	https://lore.kernel.org/bpf/CACAyw99bEYWJCSGqfLiJ9Jp5YE1ZsZSiJxb4RFUTwbofipf0dA%40mail.gmail.com/T/#m8929643e99bea9c18ed490a7bc2591145eac6444	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20210409-0006/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	kernel	Version: kernel 5.10.10

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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