CVE-2025-39720 – ksmbd: fix refcount leak causing resource not released

The following table lists the changes that have been made to the
CVE-2025-39720 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

    Sep. 05, 2025

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

    ksmbd: fix refcount leak causing resource not released

    When ksmbd_conn_releasing(opinfo->conn) returns true,the refcount was not
    decremented properly, causing a refcount leak that prevents the count from
    reaching zero and the memory from being released.

    Added Reference https://git.kernel.org/stable/c/36e010bb865fbaa1202fe9bcce3fd486d6db7606
    Added Reference https://git.kernel.org/stable/c/89bb430f621124af39bb31763c4a8b504c9651e2
    Added Reference https://git.kernel.org/stable/c/9a7abce6e8c0e2145b346a6d4abf0d9655e9b0e8
    Added Reference https://git.kernel.org/stable/c/a1d2bab4d53368a526c97aba92671dd71814f95a
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