cnvd - cnvd-2021-53926

cnvd-2021-53926

Vulnerability from cnvd

Title: Linux kernel输入验证错误漏洞（CNVD-2021-53926）

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，该漏洞源于一个越界写入缺陷。目前没有详细的漏洞细节提供。

Severity: 高

Patch Name: Linux kernel输入验证错误漏洞（CNVD-2021-53926）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，该漏洞源于一个越界写入缺陷。目前没有详细的漏洞细节提供。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-5.13.4

Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-33909

Impacted products

Name
Linux Linux kernel

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2021-33909"
    }
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-53926",
  "openTime": "2021-07-23",
  "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\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e00\u4e2a\u8d8a\u754c\u5199\u5165\u7f3a\u9677\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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",
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  "serverity": "\u9ad8",
  "submitTime": "2021-07-23",
  "title": "Linux kernel\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2021-53926\uff09"
}

CVE-2021-33909 (GCVE-0-2021-33909)

Vulnerability from cvelistv5

Published

2021-07-20 18:01

Modified

2024-08-04 00:05

Severity ?

CWE

Summary

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.

References

▼	URL	Tags
	https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html	mailing-list, x_refsource_MLIST
	https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html	mailing-list, x_refsource_MLIST
	https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html	mailing-list, x_refsource_MLIST
	https://www.debian.org/security/2021/dsa-4941	vendor-advisory, x_refsource_DEBIAN
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/	vendor-advisory, x_refsource_FEDORA
	http://www.openwall.com/lists/oss-security/2021/07/22/7	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2021/08/25/10	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2021/09/17/2	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2021/09/17/4	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2021/09/21/1	mailing-list, x_refsource_MLIST
	https://www.oracle.com/security-alerts/cpujan2022.html	x_refsource_MISC
	https://www.openwall.com/lists/oss-security/2021/07/20/1	x_refsource_MISC
	https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b	x_refsource_CONFIRM
	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4	x_refsource_CONFIRM
	http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html	x_refsource_MISC
	http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20210819-0004/	x_refsource_CONFIRM
	http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html	x_refsource_MISC
	http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html	x_refsource_MISC
	https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015	x_refsource_CONFIRM

Impacted products

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

Show details on NVD website

JSON

To clipboard

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              "name": "[oss-security] 20210917 Re: Containers-optimized OS (COS) membership in the linux-distros list",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/09/17/4"
            },
            {
              "name": "[oss-security] 20210920 Re: Containers-optimized OS (COS) membership in the linux-distros list",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/09/21/1"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujan2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
            },
            {
              "name": "https://www.openwall.com/lists/oss-security/2021/07/20/1",
              "refsource": "MISC",
              "url": "https://www.openwall.com/lists/oss-security/2021/07/20/1"
            },
            {
              "name": "https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b",
              "refsource": "CONFIRM",
              "url": "https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b"
            },
            {
              "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4",
              "refsource": "CONFIRM",
              "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4"
            },
            {
              "name": "http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html",
              "refsource": "MISC",
              "url": "http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html"
            },
            {
              "name": "http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html",
              "refsource": "MISC",
              "url": "http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20210819-0004/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20210819-0004/"
            },
            {
              "name": "http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html",
              "refsource": "MISC",
              "url": "http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html"
            },
            {
              "name": "http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html",
              "refsource": "MISC",
              "url": "http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html"
            },
            {
              "name": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015",
              "refsource": "CONFIRM",
              "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-33909",
    "datePublished": "2021-07-20T18:01:34",
    "dateReserved": "2021-06-07T00:00:00",
    "dateUpdated": "2024-08-04T00:05:52.143Z",
    "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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