CVE-2025-71223
Unknown Unknown - Not Provided

Reference Count Leak in Linux Kernel SMB2_open() Causes Resource Exhaustion

Publication date: 2026-02-14

Last updated on: 2026-03-18

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: smb/server: fix refcount leak in smb2_open() When ksmbd_vfs_getattr() fails, the reference count of ksmbd_file must be released.

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Meta Information

Published
2026-02-14
Last Modified
2026-03-18
Generated
2026-07-06
AI Q&A
2026-02-14
EPSS Evaluated
2026-07-05
NVD
CVE-2025-71223
EUVD
EUVD-2025-206987

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel From 6.13 (inc) to 6.18.10 (exc)
linux linux_kernel From 6.6.32 (inc) to 6.6.124 (exc)
linux linux_kernel From 6.9 (inc) to 6.12.70 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a reference count leak in the Linux kernel's SMB server component, specifically in the smb2_open() function.

When the function ksmbd_vfs_getattr() fails, the reference count of the ksmbd_file object is not properly released, leading to a resource leak.

Impact Analysis

The reference count leak can cause resource exhaustion over time, potentially leading to degraded system performance or instability in the SMB server functionality.

Compliance Impact

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