cnvd - cnvd-2020-40610

cnvd-2020-40610

Vulnerability from cnvd

Title: Linux kernel输入验证错误漏洞（CNVD-2020-40610）

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 5.6.5之前版本（CID-7395ea4e65c2）中的include / linux / sched.h文件中的exec_id变量存在安全漏洞。攻击者可利用该漏洞绕过‘do_notify_parent’函数的保护机制。

Severity: 中

Patch Name: Linux kernel输入验证错误漏洞（CNVD-2020-40610）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 5.6.5之前版本（CID-7395ea4e65c2）中的include / linux / sched.h文件中的exec_id变量存在安全漏洞。攻击者可利用该漏洞绕过‘do_notify_parent’函数的保护机制。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://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-12826

Impacted products

Name
Linux Linux kernel <5.6.5

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-12826"
    }
  },
  "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 5.6.5\u4e4b\u524d\u7248\u672c\uff08CID-7395ea4e65c2\uff09\u4e2d\u7684include / linux / sched.h\u6587\u4ef6\u4e2d\u7684exec_id\u53d8\u91cf\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u2018do_notify_parent\u2019\u51fd\u6570\u7684\u4fdd\u62a4\u673a\u5236\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://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-40610",
  "openTime": "2020-07-16",
  "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 5.6.5\u4e4b\u524d\u7248\u672c\uff08CID-7395ea4e65c2\uff09\u4e2d\u7684include / linux / sched.h\u6587\u4ef6\u4e2d\u7684exec_id\u53d8\u91cf\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u2018do_notify_parent\u2019\u51fd\u6570\u7684\u4fdd\u62a4\u673a\u5236\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-2020-40610\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Linux kernel \u003c5.6.5"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-12826",
  "serverity": "\u4e2d",
  "submitTime": "2020-05-14",
  "title": "Linux kernel\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2020-40610\uff09"
}

CVE-2020-12826 (GCVE-0-2020-12826)

Vulnerability from cvelistv5

Published

2020-05-12 18:58

Modified

2024-08-04 12:04

Severity ?

CWE

Summary

A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2. Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in a different security domain. Exploitation limitations include the amount of elapsed time before an integer overflow occurs, and the lack of scenarios where signals to a parent process present a substantial operational threat.

References

▼	URL	Tags
	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5	x_refsource_MISC
	https://www.openwall.com/lists/kernel-hardening/2020/03/25/1	x_refsource_MISC
	https://lists.openwall.net/linux-kernel/2020/03/24/1803	x_refsource_MISC
	https://github.com/torvalds/linux/commit/7395ea4e65c2a00d23185a3f63ad315756ba9cef	x_refsource_MISC
	https://bugzilla.redhat.com/show_bug.cgi?id=1822077	x_refsource_CONFIRM
	https://usn.ubuntu.com/4367-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/4369-1/	vendor-advisory, x_refsource_UBUNTU
	https://security.netapp.com/advisory/ntap-20200608-0001/	x_refsource_CONFIRM
	https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html	mailing-list, x_refsource_MLIST
	https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html	mailing-list, x_refsource_MLIST
	https://usn.ubuntu.com/4391-1/	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

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T12:04:22.878Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/kernel-hardening/2020/03/25/1"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://lists.openwall.net/linux-kernel/2020/03/24/1803"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/torvalds/linux/commit/7395ea4e65c2a00d23185a3f63ad315756ba9cef"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1822077"
          },
          {
            "name": "USN-4367-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4367-1/"
          },
          {
            "name": "USN-4369-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4369-1/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20200608-0001/"
          },
          {
            "name": "[debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html"
          },
          {
            "name": "[debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html"
          },
          {
            "name": "USN-4391-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4391-1/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2. Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in a different security domain. Exploitation limitations include the amount of elapsed time before an integer overflow occurs, and the lack of scenarios where signals to a parent process present a substantial operational threat."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-06-22T21:06:25",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.openwall.com/lists/kernel-hardening/2020/03/25/1"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://lists.openwall.net/linux-kernel/2020/03/24/1803"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/torvalds/linux/commit/7395ea4e65c2a00d23185a3f63ad315756ba9cef"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1822077"
        },
        {
          "name": "USN-4367-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4367-1/"
        },
        {
          "name": "USN-4369-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4369-1/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20200608-0001/"
        },
        {
          "name": "[debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html"
        },
        {
          "name": "[debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html"
        },
        {
          "name": "USN-4391-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4391-1/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-12826",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2. Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in a different security domain. Exploitation limitations include the amount of elapsed time before an integer overflow occurs, and the lack of scenarios where signals to a parent process present a substantial operational threat."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5",
              "refsource": "MISC",
              "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5"
            },
            {
              "name": "https://www.openwall.com/lists/kernel-hardening/2020/03/25/1",
              "refsource": "MISC",
              "url": "https://www.openwall.com/lists/kernel-hardening/2020/03/25/1"
            },
            {
              "name": "https://lists.openwall.net/linux-kernel/2020/03/24/1803",
              "refsource": "MISC",
              "url": "https://lists.openwall.net/linux-kernel/2020/03/24/1803"
            },
            {
              "name": "https://github.com/torvalds/linux/commit/7395ea4e65c2a00d23185a3f63ad315756ba9cef",
              "refsource": "MISC",
              "url": "https://github.com/torvalds/linux/commit/7395ea4e65c2a00d23185a3f63ad315756ba9cef"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1822077",
              "refsource": "CONFIRM",
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1822077"
            },
            {
              "name": "USN-4367-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4367-1/"
            },
            {
              "name": "USN-4369-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4369-1/"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20200608-0001/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20200608-0001/"
            },
            {
              "name": "[debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html"
            },
            {
              "name": "[debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html"
            },
            {
              "name": "USN-4391-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4391-1/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-12826",
    "datePublished": "2020-05-12T18:58:48",
    "dateReserved": "2020-05-12T00:00:00",
    "dateUpdated": "2024-08-04T12:04:22.878Z",
    "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.

Action not permitted