cnvd - cnvd-2023-56638

cnvd-2023-56638

Vulnerability from cnvd

Title: Linux Kernel拒绝服务漏洞（CNVD-2023-56638）

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存在拒绝服务漏洞，该漏洞源于当Netlink套接字收到XFRM_MSG_GETSA、XFRM_MSG_GETPOLICY类型消息的消息(sendmsg)并且设置了DUMP标志时，可能会出现NULL指针取消引用，攻击者可利用该漏洞导致拒绝服务。

Severity: 中

Patch Name: Linux Kernel拒绝服务漏洞（CNVD-2023-56638）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存在拒绝服务漏洞，该漏洞源于当Netlink套接字收到XFRM_MSG_GETSA、XFRM_MSG_GETPOLICY类型消息的消息(sendmsg)并且设置了DUMP标志时，可能会出现NULL指针取消引用，攻击者可利用该漏洞导致拒绝服务。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://github.com/torvalds/linux/commit/1ba5bf993c6a3142e18e68ea6452b347f9cb5635

Reference: https://bugzilla.redhat.com/show_bug.cgi?id=2221501

Impacted products

Name
Linux Linux kernel

Show details on source website

JSON

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{
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    "cve": {
      "cveNumber": "CVE-2023-3106",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2023-3106"
    }
  },
  "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\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5f53Netlink\u5957\u63a5\u5b57\u6536\u5230XFRM_MSG_GETSA\u3001XFRM_MSG_GETPOLICY\u7c7b\u578b\u6d88\u606f\u7684\u6d88\u606f(sendmsg)\u5e76\u4e14\u8bbe\u7f6e\u4e86DUMP\u6807\u5fd7\u65f6\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0NULL\u6307\u9488\u53d6\u6d88\u5f15\u7528\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\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://github.com/torvalds/linux/commit/1ba5bf993c6a3142e18e68ea6452b347f9cb5635",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2023-56638",
  "openTime": "2023-07-18",
  "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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5f53Netlink\u5957\u63a5\u5b57\u6536\u5230XFRM_MSG_GETSA\u3001XFRM_MSG_GETPOLICY\u7c7b\u578b\u6d88\u606f\u7684\u6d88\u606f(sendmsg)\u5e76\u4e14\u8bbe\u7f6e\u4e86DUMP\u6807\u5fd7\u65f6\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0NULL\u6307\u9488\u53d6\u6d88\u5f15\u7528\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2023-56638\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Linux kernel"
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  "referenceLink": "https://bugzilla.redhat.com/show_bug.cgi?id=2221501",
  "serverity": "\u4e2d",
  "submitTime": "2023-07-14",
  "title": "Linux Kernel\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2023-56638\uff09"
}

CVE-2023-3106 (GCVE-0-2023-3106)

Vulnerability from cvelistv5

Published

2023-07-12 08:27

Modified

2025-08-30 05:27

Severity ?

6.6 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CWE

CWE-476 - NULL Pointer Dereference

Summary

A NULL pointer dereference vulnerability was found in netlink_dump. This issue can occur when the Netlink socket receives the message(sendmsg) for the XFRM_MSG_GETSA, XFRM_MSG_GETPOLICY type message, and the DUMP flag is set and can cause a denial of service or possibly another unspecified impact. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is unlikely.

References

▼	URL	Tags
	https://access.redhat.com/security/cve/CVE-2023-3106	vdb-entry, x_refsource_REDHAT
	https://bugzilla.redhat.com/show_bug.cgi?id=2221501	issue-tracking, x_refsource_REDHAT
	https://github.com/torvalds/linux/commit/1ba5bf993c6a3142e18e68ea6452b347f9cb5635

Impacted products

Vendor

Product

Version

▼

Red Hat

Red Hat Enterprise Linux 6

cpe:/o:redhat:enterprise_linux:6

Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

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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