CVE-2023-3865 (GCVE-0-2023-3865)

Vulnerability from cvelistv5 – Published: 2025-08-16 13:27 – Updated: 2025-08-19 05:47
VLAI?
Title
ksmbd: fix out-of-bound read in smb2_write
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 3813eee5154d6a4c5875cb4444cb2b63bac8947f (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < c86211159bc3178b891e0d60e586a32c7b6a231b (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 58a9c41064df27632e780c5a3ae3e0e4284957d1 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 5fe7f7b78290638806211046a99f031ff26164e1 (git)
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    Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.36 , ≤ 6.1.* (semver)
Unaffected: 6.3.10 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)
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{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/smb2misc.c"
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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 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."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-08-19T05:47:12.083Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/3813eee5154d6a4c5875cb4444cb2b63bac8947f"
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      "title": "ksmbd: fix out-of-bound read in smb2_write",
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  "cveMetadata": {
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    "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"
}


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