CVE-2023-4130 (GCVE-0-2023-4130)

Vulnerability from cvelistv5 – Published: 2025-08-16 13:27 – Updated: 2025-08-19 05:47
VLAI?
Title
ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea() There are multiple smb2_ea_info buffers in FILE_FULL_EA_INFORMATION request from client. ksmbd find next smb2_ea_info using ->NextEntryOffset of current smb2_ea_info. ksmbd need to validate buffer length Before accessing the next ea. ksmbd should check buffer length using buf_len, not next variable. next is the start offset of current ea that got from previous ea.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < aeb974907642be095e38ecb1a400ca583958b2b0 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < f339d76a3a972601d0738b881b099d49ebbdc3a2 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 4bf629262f9118ee91b1c3a518ebf2b3bcb22180 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 79ed288cef201f1f212dfb934bcaac75572fb8f6 (git)
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    Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.127 , ≤ 5.15.* (semver)
Unaffected: 6.1.46 , ≤ 6.1.* (semver)
Unaffected: 6.4.11 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/smb2pdu.c"
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                  "versionStartIncluding": "5.15",
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                }
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              "negate": false,
              "operator": "OR"
            }
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()\n\nThere are multiple smb2_ea_info buffers in FILE_FULL_EA_INFORMATION request\nfrom client. ksmbd find next smb2_ea_info using -\u003eNextEntryOffset of\ncurrent smb2_ea_info. ksmbd need to validate buffer length Before\naccessing the next ea. ksmbd should check buffer length using buf_len,\nnot next variable. next is the start offset of current ea that got from\nprevious ea."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-19T05:47:15.732Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/aeb974907642be095e38ecb1a400ca583958b2b0"
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          "url": "https://git.kernel.org/stable/c/f339d76a3a972601d0738b881b099d49ebbdc3a2"
        },
        {
          "url": "https://git.kernel.org/stable/c/4bf629262f9118ee91b1c3a518ebf2b3bcb22180"
        },
        {
          "url": "https://git.kernel.org/stable/c/79ed288cef201f1f212dfb934bcaac75572fb8f6"
        }
      ],
      "title": "ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-4130",
    "datePublished": "2025-08-16T13:27:58.227Z",
    "dateReserved": "2023-08-03T08:12:08.227Z",
    "dateUpdated": "2025-08-19T05:47:15.732Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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