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CVE-2023-4515 – “KSMBD SMB2 Command Size Validation Vulnerability”

The following table lists the changes that have been made to the
CVE-2023-4515 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 16, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved:

    ksmbd: validate command request size

    In commit 2b9b8f3b68ed (“ksmbd: validate command payload size”), except
    for SMB2_OPLOCK_BREAK_HE command, the request size of other commands
    is not checked, it’s not expected. Fix it by add check for request
    size of other commands.
    Added Reference https://git.kernel.org/stable/c/595679098bdcdbfbba91ebe07a2f7f208df93870
    Added Reference https://git.kernel.org/stable/c/5aa4fda5aa9c2a5a7bac67b4a12b089ab81fee3c
    Added Reference https://git.kernel.org/stable/c/c6bef3bc30fd4a175aef846b7d928a6c40d091cd
    Added Reference https://git.kernel.org/stable/c/ff7236b66d69582f90cf5616e63cfc3dc18142bb
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