cnvd - cnvd-2017-06933

cnvd-2017-06933

Vulnerability from cnvd

Title: Linux kernel信息泄露漏洞（CNVD-2017-06933）

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 4.6.2之前的版本中的fs/ext4/inode.c文件存在信息泄露漏洞，该漏洞源于程序未能正确的处理needs-flushing-before-commit列表。本地攻击者可利用该漏洞获取其他用户文件中的敏感信息。

Severity: 低

Patch Name: Linux kernel信息泄露漏洞（CNVD-2017-06933）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 4.6.2之前的版本中的fs/ext4/inode.c文件存在信息泄露漏洞，该漏洞源于程序未能正确的处理needs-flushing-before-commit列表。本地攻击者可利用该漏洞获取其他用户文件中的敏感信息。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： http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2

Reference: http://www.openwall.com/lists/oss-security/2017/05/15/2

Impacted products

Name
Linux kernel <=4.6.2

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-7495"
    }
  },
  "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 4.6.2\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684fs/ext4/inode.c\u6587\u4ef6\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u5904\u7406needs-flushing-before-commit\u5217\u8868\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u5176\u4ed6\u7528\u6237\u6587\u4ef6\u4e2d\u7684\u654f\u611f\u4fe1\u606f\u3002",
  "discovererName": "Wade Mealing",
  "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\nhttp://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-06933",
  "openTime": "2017-05-18",
  "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 4.6.2\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684fs/ext4/inode.c\u6587\u4ef6\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u5904\u7406needs-flushing-before-commit\u5217\u8868\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u5176\u4ed6\u7528\u6237\u6587\u4ef6\u4e2d\u7684\u654f\u611f\u4fe1\u606f\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\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2017-06933\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux kernel \u003c=4.6.2"
  },
  "referenceLink": "http://www.openwall.com/lists/oss-security/2017/05/15/2",
  "serverity": "\u4f4e",
  "submitTime": "2017-05-17",
  "title": "Linux kernel\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2017-06933\uff09"
}

CVE-2017-7495 (GCVE-0-2017-7495)

Vulnerability from cvelistv5

Published

2017-05-15 18:00

Modified

2024-08-05 16:04

Severity ?

CWE

filesystem mishandling

Summary

fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file.

References

▼	URL	Tags
	https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f47168841376824	x_refsource_CONFIRM
	http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2	x_refsource_CONFIRM
	https://source.android.com/security/bulletin/2017-09-01	x_refsource_CONFIRM
	http://www.securityfocus.com/bid/98491	vdb-entry, x_refsource_BID
	https://bugzilla.redhat.com/show_bug.cgi?id=1450261	x_refsource_CONFIRM
	http://www.openwall.com/lists/oss-security/2017/05/15/2	x_refsource_CONFIRM
	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c36a733ac27962fea7d6f47168841376824	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	Linux kernel before 4.6.2	Version: Linux kernel before 4.6.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T16:04:11.875Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
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            ],
            "url": "https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f47168841376824"
          },
          {
            "tags": [
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            ],
            "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2"
          },
          {
            "tags": [
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            ],
            "url": "https://source.android.com/security/bulletin/2017-09-01"
          },
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            "name": "98491",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/98491"
          },
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            "tags": [
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            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1450261"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2017/05/15/2"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
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            ],
            "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c36a733ac27962fea7d6f47168841376824"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Linux kernel before 4.6.2",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Linux kernel before 4.6.2"
            }
          ]
        }
      ],
      "datePublic": "2017-05-15T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users\u0027 files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "filesystem mishandling",
              "lang": "en",
              "type": "text"
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      ],
      "providerMetadata": {
        "dateUpdated": "2017-09-08T19:57:01",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
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      "references": [
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        },
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          "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c36a733ac27962fea7d6f47168841376824"
        }
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  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
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    "datePublished": "2017-05-15T18:00:00",
    "dateReserved": "2017-04-05T00:00:00",
    "dateUpdated": "2024-08-05T16:04:11.875Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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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