CVE-2023-3865 (GCVE-0-2023-3865)
Vulnerability from cvelistv5
Published
2025-08-16 13:27
Modified
2025-08-19 05:47
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bound read in smb2_write ksmbd_smb2_check_message doesn't validate hdr->NextCommand. If ->NextCommand is bigger than Offset + Length of smb2 write, It will allow oversized smb2 write length. It will cause OOB read in smb2_write.
References
Impacted products
Vendor Product Version
Linux Linux Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
Version: 0626e6641f6b467447c81dd7678a69c66f7746cf
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/smb2misc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
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            }
          ]
        },
        {
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          "product": "Linux",
          "programFiles": [
            "fs/smb/server/smb2misc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.3.*",
              "status": "unaffected",
              "version": "6.3.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.1.36",
                  "versionStartIncluding": "5.15",
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                },
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                  "versionEndExcluding": "6.3.10",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.4",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix out-of-bound read in smb2_write\n\nksmbd_smb2_check_message doesn\u0027t validate hdr-\u003eNextCommand. If\n-\u003eNextCommand is bigger than Offset + Length of smb2 write, It will\nallow oversized smb2 write length. It will cause OOB read in smb2_write."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-19T05:47:12.083Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3813eee5154d6a4c5875cb4444cb2b63bac8947f"
        },
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          "url": "https://git.kernel.org/stable/c/c86211159bc3178b891e0d60e586a32c7b6a231b"
        },
        {
          "url": "https://git.kernel.org/stable/c/58a9c41064df27632e780c5a3ae3e0e4284957d1"
        },
        {
          "url": "https://git.kernel.org/stable/c/5fe7f7b78290638806211046a99f031ff26164e1"
        }
      ],
      "title": "ksmbd: fix out-of-bound read in smb2_write",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-3865",
    "datePublished": "2025-08-16T13:27:56.403Z",
    "dateReserved": "2023-07-24T14:52:38.053Z",
    "dateUpdated": "2025-08-19T05:47:12.083Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-3865\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-08-16T14:15:27.250\",\"lastModified\":\"2025-08-18T20:16:28.750\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nksmbd: fix out-of-bound read in smb2_write\\n\\nksmbd_smb2_check_message doesn\u0027t validate hdr-\u003eNextCommand. If\\n-\u003eNextCommand is bigger than Offset + Length of smb2 write, It will\\nallow oversized smb2 write length. It will cause OOB read in smb2_write.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: se corrige una lectura fuera de los l\u00edmite en smb2_write. ksmbd_smb2_check_message no valida hdr-\u0026gt;NextCommand. Si -\u0026gt;NextCommand es mayor que Offset + Length de la escritura smb2, se permite una longitud de escritura smb2 sobredimensionada. Esto provoca una lectura fuera de los l\u00edmite en smb2_write.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3813eee5154d6a4c5875cb4444cb2b63bac8947f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/58a9c41064df27632e780c5a3ae3e0e4284957d1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5fe7f7b78290638806211046a99f031ff26164e1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c86211159bc3178b891e0d60e586a32c7b6a231b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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