cnvd - cnvd-2020-28263

cnvd-2020-28263

Vulnerability from cnvd

Title: Linux kernel内存泄露漏洞（CNVD-2020-28263）

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 5.6之前版本中的arch/x86/kvm/svm.c文件的svm_cpu_uninit存在内存泄露漏洞。攻击者可利用该漏洞造成拒绝服务。

Severity: 低

Patch Name: Linux kernel内存泄露漏洞（CNVD-2020-28263）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 5.6之前版本中的arch/x86/kvm/svm.c文件的svm_cpu_uninit存在内存泄露漏洞。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:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d80b64ff297e40c2b6f7d7abc1b3eba70d22a068

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-12768

Impacted products

Name
Linux kernel <5.6

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-12768"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel 5.6\u4e4b\u524d\u7248\u672c\u4e2d\u7684arch/x86/kvm/svm.c\u6587\u4ef6\u7684svm_cpu_uninit\u5b58\u5728\u5185\u5b58\u6cc4\u9732\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d80b64ff297e40c2b6f7d7abc1b3eba70d22a068",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-28263",
  "openTime": "2020-05-14",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 5.6\u4e4b\u524d\u7248\u672c\u4e2d\u7684arch/x86/kvm/svm.c\u6587\u4ef6\u7684svm_cpu_uninit\u5b58\u5728\u5185\u5b58\u6cc4\u9732\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\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\u5185\u5b58\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2020-28263\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux kernel \u003c5.6"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-12768",
  "serverity": "\u4f4e",
  "submitTime": "2020-05-11",
  "title": "Linux kernel\u5185\u5b58\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2020-28263\uff09"
}

CVE-2020-12768 (GCVE-0-2020-12768)

Vulnerability from cvelistv5

Published

2020-05-09 20:16

Modified

2024-08-04 12:04

Severity ?

CWE

Summary

An issue was discovered in the Linux kernel before 5.6. svm_cpu_uninit in arch/x86/kvm/svm.c has a memory leak, aka CID-d80b64ff297e. NOTE: third parties dispute this issue because it's a one-time leak at the boot, the size is negligible, and it can't be triggered at will

References

▼	URL	Tags
	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d80b64ff297e40c2b6f7d7abc1b3eba70d22a068	x_refsource_CONFIRM
	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6	x_refsource_CONFIRM
	https://bugzilla.suse.com/show_bug.cgi?id=1171736#c3	x_refsource_MISC
	https://www.debian.org/security/2020/dsa-4699	vendor-advisory, x_refsource_DEBIAN
	https://usn.ubuntu.com/4413-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/4411-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/4412-1/	vendor-advisory, x_refsource_UBUNTU

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

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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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