CVE-2025-39720
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-05

Last updated on: 2025-11-25

Assigner: kernel.org

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.
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Meta Information
Published
2025-09-05
Last Modified
2025-11-25
Generated
2026-06-16
AI Q&A
2025-09-05
EPSS Evaluated
2026-06-14
NVD
CVE-2025-39720
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.17
linux linux_kernel 6.17
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
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Exploitability
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CWE ID Description
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Executive Summary

This vulnerability is a refcount leak in the Linux kernel's ksmbd component. Specifically, when the function ksmbd_conn_releasing(opinfo->conn) returns true, the reference count is not decremented properly. This causes the reference count to never reach zero, preventing the associated memory from being released.

Impact Analysis

The impact of this vulnerability is that it causes a resource leak in the system. Because memory is not released properly, it can lead to increased memory usage over time, potentially degrading system performance or causing resource exhaustion.

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