Vulnerability-Lookup

CNVD-2023-56646

Vulnerability from cnvd - Published: 2023-07-19

Title

Linux kernel代码问题漏洞（CNVD-2023-56646）

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存在代码问题漏洞，该漏洞源于IPv6模块中存在缺陷，arg.result在fib6_rule_lookup中的使用不一致，有时持有rt6_info，有时持有fib6_info，攻击者可利用该漏洞导致fib6_rule_suppress中的内核崩溃。

Severity

中

Patch Name

Linux kernel代码问题漏洞（CNVD-2023-56646）的补丁

Patch Description

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/a65120bae4b7

Reference

https://nvd.nist.gov/vuln/detail/CVE-2023-3022

Impacted products

Name
Linux Linux kernel <=5.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2023-3022",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2023-3022"
    }
  },
  "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\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eIPv6\u6a21\u5757\u4e2d\u5b58\u5728\u7f3a\u9677\uff0carg.result\u5728fib6_rule_lookup\u4e2d\u7684\u4f7f\u7528\u4e0d\u4e00\u81f4\uff0c\u6709\u65f6\u6301\u6709rt6_info\uff0c\u6709\u65f6\u6301\u6709fib6_info\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4fib6_rule_suppress\u4e2d\u7684\u5185\u6838\u5d29\u6e83\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/a65120bae4b7",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2023-56646",
  "openTime": "2023-07-19",
  "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\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eIPv6\u6a21\u5757\u4e2d\u5b58\u5728\u7f3a\u9677\uff0carg.result\u5728fib6_rule_lookup\u4e2d\u7684\u4f7f\u7528\u4e0d\u4e00\u81f4\uff0c\u6709\u65f6\u6301\u6709rt6_info\uff0c\u6709\u65f6\u6301\u6709fib6_info\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4fib6_rule_suppress\u4e2d\u7684\u5185\u6838\u5d29\u6e83\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\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2023-56646\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Linux kernel \u003c=5.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2023-3022",
  "serverity": "\u4e2d",
  "submitTime": "2023-06-21",
  "title": "Linux kernel\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2023-56646\uff09"
}

CVE-2023-3022 (GCVE-0-2023-3022)

Vulnerability from cvelistv5 – Published: 2023-06-19 00:00 – Updated: 2025-03-11 14:48

Summary

A flaw was found in the IPv6 module of the Linux kernel. The arg.result was not used consistently in fib6_rule_lookup, sometimes holding rt6_info and other times fib6_info. This was not accounted for in other parts of the code where rt6_info was expected unconditionally, potentially leading to a kernel panic in fib6_rule_suppress.

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-06 15:55 UTC

CWE

CWE-843

Assigner

redhat redhat root

References

2 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2211440
https://github.com/torvalds/linux/commit/a65120bae4b7

Impacted products

1 product

Vendor	Product	Version
n/a	Linux Kernel (IPv6)	Affected: Fixed in kernel 5.2-rc1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T06:41:04.211Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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            "tags": [
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            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2211440"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/torvalds/linux/commit/a65120bae4b7"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-3022",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-06T15:55:19.466585Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-11T14:48:04.464Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "product": "Linux Kernel (IPv6)",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Fixed in kernel 5.2-rc1"
            }
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      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the IPv6 module of the Linux kernel. The arg.result was not used consistently in fib6_rule_lookup, sometimes holding rt6_info and other times fib6_info. This was not accounted for in other parts of the code where rt6_info was expected unconditionally, potentially leading to a kernel panic in fib6_rule_suppress."
        }
      ],
      "problemTypes": [
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              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2023-06-19T00:00:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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      "references": [
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2211440"
        },
        {
          "url": "https://github.com/torvalds/linux/commit/a65120bae4b7"
        }
      ]
    }
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  "cveMetadata": {
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    "datePublished": "2023-06-19T00:00:00.000Z",
    "dateReserved": "2023-05-31T00:00:00.000Z",
    "dateUpdated": "2025-03-11T14:48:04.464Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.