GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2023-46343 (GCVE-0-2023-46343)

Vulnerability from cvelistv5 – Published: 2024-01-23 00:00 – Updated: 2025-06-17 13:55
VLAI
Summary
In the Linux kernel before 6.5.9, there is a NULL pointer dereference in send_acknowledge in net/nfc/nci/spi.c.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-17 13:55 UTC
CWE
  • n/a
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T20:45:41.271Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lore.kernel.org/netdev/20231013184129.18738-1-krzysztof.kozlowski%40linaro.org/T/#r38bdbaf8ae15305b77f6c5bc8e15d38f405623c7"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.9"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/torvalds/linux/commit/7937609cd387246aed994e81aa4fa951358fba41"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7937609cd387246aed994e81aa4fa951358fba41"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "NONE",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-46343",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-17T13:55:02.811515Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-476",
                "description": "CWE-476 NULL Pointer Dereference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-17T13:55:44.214Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel before 6.5.9, there is a NULL pointer dereference in send_acknowledge in net/nfc/nci/spi.c."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-01-23T09:54:49.419Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://lore.kernel.org/netdev/20231013184129.18738-1-krzysztof.kozlowski%40linaro.org/T/#r38bdbaf8ae15305b77f6c5bc8e15d38f405623c7"
        },
        {
          "url": "https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.9"
        },
        {
          "url": "https://github.com/torvalds/linux/commit/7937609cd387246aed994e81aa4fa951358fba41"
        },
        {
          "url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7937609cd387246aed994e81aa4fa951358fba41"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-46343",
    "datePublished": "2024-01-23T00:00:00.000Z",
    "dateReserved": "2023-10-23T00:00:00.000Z",
    "dateUpdated": "2025-06-17T13:55:44.214Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-46343",
      "date": "2026-09-16",
      "epss": "0.00237",
      "percentile": "0.14903"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"6.5.9\", \"matchCriteriaId\": \"3163B50F-90CD-4C59-B542-BD1C9AE7CCE8\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel before 6.5.9, there is a NULL pointer dereference in send_acknowledge in net/nfc/nci/spi.c.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux anterior a 6.5.9, hay una desreferencia de puntero NULL en send_acknowledge en net/nfc/nci/spi.c.\"}]",
      "id": "CVE-2023-46343",
      "lastModified": "2024-11-21T08:28:19.323",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2024-01-23T10:15:10.383",
      "references": "[{\"url\": \"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.9\", \"source\": \"cve@mitre.org\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7937609cd387246aed994e81aa4fa951358fba41\", \"source\": \"cve@mitre.org\", \"tags\": [\"Patch\"]}, {\"url\": \"https://github.com/torvalds/linux/commit/7937609cd387246aed994e81aa4fa951358fba41\", \"source\": \"cve@mitre.org\", \"tags\": [\"Patch\"]}, {\"url\": \"https://lore.kernel.org/netdev/20231013184129.18738-1-krzysztof.kozlowski%40linaro.org/T/#r38bdbaf8ae15305b77f6c5bc8e15d38f405623c7\", \"source\": \"cve@mitre.org\", \"tags\": [\"Patch\"]}, {\"url\": \"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.9\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7937609cd387246aed994e81aa4fa951358fba41\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://github.com/torvalds/linux/commit/7937609cd387246aed994e81aa4fa951358fba41\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://lore.kernel.org/netdev/20231013184129.18738-1-krzysztof.kozlowski%40linaro.org/T/#r38bdbaf8ae15305b77f6c5bc8e15d38f405623c7\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-476\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T03:23:55.000Z",
      "cve": "CVE-2023-46343",
      "id": "msrc_CVE-2023-46343",
      "initial_release_date": "2024-01-01T08:00:00.000Z",
      "product_status:fixed": "3",
      "product_status:known_affected": "3",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "In the Linux kernel before 6.5.9 there is a NULL pointer dereference in send_acknowledge in net/nfc/nci/spi.c.",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2023-46343.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-46343\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2024-01-23T10:15:10.383\",\"lastModified\":\"2026-06-17T06:30:40.867\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel before 6.5.9, there is a NULL pointer dereference in send_acknowledge in net/nfc/nci/spi.c.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux anterior a 6.5.9, hay una desreferencia de puntero NULL en send_acknowledge en net/nfc/nci/spi.c.\"}],\"affected\":[{\"source\":\"cve@mitre.org\",\"affectedData\":[{\"vendor\":\"n/a\",\"product\":\"n/a\",\"versions\":[{\"version\":\"n/a\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-06-17T13:55:02.811515Z\",\"id\":\"CVE-2023-46343\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.5.9\",\"matchCriteriaId\":\"3163B50F-90CD-4C59-B542-BD1C9AE7CCE8\"}]}]}],\"references\":[{\"url\":\"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.9\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7937609cd387246aed994e81aa4fa951358fba41\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/torvalds/linux/commit/7937609cd387246aed994e81aa4fa951358fba41\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lore.kernel.org/netdev/20231013184129.18738-1-krzysztof.kozlowski%40linaro.org/T/#r38bdbaf8ae15305b77f6c5bc8e15d38f405623c7\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.9\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7937609cd387246aed994e81aa4fa951358fba41\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/torvalds/linux/commit/7937609cd387246aed994e81aa4fa951358fba41\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lore.kernel.org/netdev/20231013184129.18738-1-krzysztof.kozlowski%40linaro.org/T/#r38bdbaf8ae15305b77f6c5bc8e15d38f405623c7\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T11:31:35+00:00",
      "cve": "CVE-2023-46343",
      "id": "CVE-2023-46343",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: NULL pointer dereference in send_acknowledge in net/nfc/nci/spi.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-46343.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T01:50:45Z",
      "cve": "CVE-2023-46343",
      "id": "CVE-2023-46343",
      "initial_release_date": "2024-01-25T02:48:57Z",
      "product_status:known_affected": "540",
      "product_status:known_not_affected": "206",
      "product_status:recommended": "280",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-46343",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-46343.json",
      "version": "63"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lore.kernel.org/netdev/20231013184129.18738-1-krzysztof.kozlowski%40linaro.org/T/#r38bdbaf8ae15305b77f6c5bc8e15d38f405623c7\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.9\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://github.com/torvalds/linux/commit/7937609cd387246aed994e81aa4fa951358fba41\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7937609cd387246aed994e81aa4fa951358fba41\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T20:45:41.271Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-46343\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-06-17T13:55:02.811515Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-06-17T13:55:25.982Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"n/a\", \"product\": \"n/a\", \"versions\": [{\"status\": \"affected\", \"version\": \"n/a\"}]}], \"references\": [{\"url\": \"https://lore.kernel.org/netdev/20231013184129.18738-1-krzysztof.kozlowski%40linaro.org/T/#r38bdbaf8ae15305b77f6c5bc8e15d38f405623c7\"}, {\"url\": \"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.9\"}, {\"url\": \"https://github.com/torvalds/linux/commit/7937609cd387246aed994e81aa4fa951358fba41\"}, {\"url\": \"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7937609cd387246aed994e81aa4fa951358fba41\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel before 6.5.9, there is a NULL pointer dereference in send_acknowledge in net/nfc/nci/spi.c.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"text\", \"description\": \"n/a\"}]}], \"providerMetadata\": {\"orgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"shortName\": \"mitre\", \"dateUpdated\": \"2024-01-23T09:54:49.419Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-46343\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-06-17T13:55:44.214Z\", \"dateReserved\": \"2023-10-23T00:00:00.000Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2024-01-23T00:00:00.000Z\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.