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

Vulnerability from cvelistv5 – Published: 2025-08-16 13:27 – Updated: 2026-08-15 12:23
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
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6890 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 3813eee5154d6a4c5875cb4444cb2b63bac8947f (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < c86211159bc3178b891e0d60e586a32c7b6a231b (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 58a9c41064df27632e780c5a3ae3e0e4284957d1 (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 5fe7f7b78290638806211046a99f031ff26164e1 (git)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
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          },
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            "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."
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      "id": "CVE-2023-3865",
      "initial_release_date": "2023-07-28T00:00:00+00:00",
      "product_status:known_not_affected": "275",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Out of bounds read in smb2_write",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-3865.json",
      "version": "3"
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  }
}



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