cnvd - cnvd-2020-66298

cnvd-2020-66298

Vulnerability from cnvd

Title: Linux kernel空指针解引用漏洞（CNVD-2020-66298）

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 5.8之前版本存在安全漏洞，该漏洞源于容易受到drivers/tty/serial/8250/8250_core.c：serial8250_isa_init_ports()的空指针解引用的攻击，攻击者可利用该漏洞通过使用未初始化的p-＞串行指针导致拒绝服务。

Severity: 低

Patch Name: Linux kernel空指针解引用漏洞（CNVD-2020-66298）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 5.8之前版本存在安全漏洞，该漏洞源于容易受到drivers/tty/serial/8250/8250_core.c：serial8250_isa_init_ports()的空指针解引用的攻击，攻击者可利用该漏洞通过使用未初始化的p-＞串行指针导致拒绝服务。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:

厂商已发布了漏洞修复程序，请及时关注更新： https://lkml.org/lkml/2020/7/21/80

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-15437

Impacted products

Name
Linux Linux kernel <5.8

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-15437",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-15437"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel 5.8\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bb9\u6613\u53d7\u5230drivers/tty/serial/8250/8250_core.c\uff1aserial8250_isa_init_ports()\u7684\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u7684\u653b\u51fb\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u4f7f\u7528\u672a\u521d\u59cb\u5316\u7684p-\uff1e\u4e32\u884c\u6307\u9488\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://lkml.org/lkml/2020/7/21/80",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-66298",
  "openTime": "2020-11-25",
  "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 5.8\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bb9\u6613\u53d7\u5230drivers/tty/serial/8250/8250_core.c\uff1aserial8250_isa_init_ports()\u7684\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u7684\u653b\u51fb\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u4f7f\u7528\u672a\u521d\u59cb\u5316\u7684p-\uff1e\u4e32\u884c\u6307\u9488\u5bfc\u81f4\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\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2020-66298\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Linux kernel \u003c5.8"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-15437",
  "serverity": "\u4f4e",
  "submitTime": "2020-11-24",
  "title": "Linux kernel\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2020-66298\uff09"
}

CVE-2020-15437 (GCVE-0-2020-15437)

Vulnerability from cvelistv5

Published

2020-11-23 20:10

Modified

2024-08-04 13:15

Severity ?

CWE

NULL Pointer Dereference

Summary

The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service by using the p->serial_in pointer which uninitialized.

References

▼	URL	Tags
	https://lkml.org/lkml/2020/7/21/80	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	linux kernel	Version: 5.7 (verified), possibly others 4.18

Show details on NVD website

JSON

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  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T13:15:20.694Z",
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              "x_transferred"
            ],
            "url": "https://lkml.org/lkml/2020/7/21/80"
          }
        ],
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    ],
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          "vendor": "n/a",
          "versions": [
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            }
          ]
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        }
      ],
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              "type": "text"
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      "providerMetadata": {
        "dateUpdated": "2020-11-23T20:10:28",
        "orgId": "7e1ac599-2767-43fa-b3ea-f10178cc98f2",
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      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://lkml.org/lkml/2020/7/21/80"
        }
      ],
      "x_legacyV4Record": {
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          "ASSIGNER": "securities@openeuler.org",
          "ID": "CVE-2020-15437",
          "STATE": "PUBLIC"
        },
        "affects": {
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                            "version_value": "5.7 (verified), possibly others 4.18"
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  "cveMetadata": {
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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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