CVE-2023-3439 (GCVE-0-2023-3439)
Vulnerability from cvelistv5
Published
2023-06-28 00:00
Modified
2025-03-10 21:08
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Summary
A flaw was found in the MCTP protocol in the Linux kernel. The function mctp_unregister() reclaims the device's relevant resource when a netcard detaches. However, a running routine may be unaware of this and cause the use-after-free of the mdev->addrs object, potentially leading to a denial of service.
References
Impacted products
Vendor Product Version
n/a Linux Kernel (mctp) Version: Fixed in kernel 5.18-rc5
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T06:55:03.477Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2217915"
          },
          {
            "tags": [
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            ],
            "url": "https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269"
          },
          {
            "name": "[oss-security] 20230702 CVE-2023-3439: Linux MCTP use-after-free in mctp_sendmsg",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2023/07/02/1"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 4.7,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-3439",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-06T15:55:04.331859Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-10T21:08:54.880Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Linux Kernel (mctp)",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Fixed in kernel 5.18-rc5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the MCTP protocol in the Linux kernel. The function mctp_unregister() reclaims the device\u0027s relevant resource when a netcard detaches. However, a running routine may be unaware of this and cause the use-after-free of the mdev-\u003eaddrs object, potentially leading to a denial of service."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-07-02T00:00:00.000Z",
        "orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
        "shortName": "fedora"
      },
      "references": [
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2217915"
        },
        {
          "url": "https://github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269"
        },
        {
          "name": "[oss-security] 20230702 CVE-2023-3439: Linux MCTP use-after-free in mctp_sendmsg",
          "tags": [
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          "url": "http://www.openwall.com/lists/oss-security/2023/07/02/1"
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  "cveMetadata": {
    "assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
    "assignerShortName": "fedora",
    "cveId": "CVE-2023-3439",
    "datePublished": "2023-06-28T00:00:00.000Z",
    "dateReserved": "2023-06-28T00:00:00.000Z",
    "dateUpdated": "2025-03-10T21:08:54.880Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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