CVE-2025-68226
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-16

Last updated on: 2025-12-18

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix incomplete backport in cfids_invalidation_worker() The previous commit bdb596ceb4b7 ("smb: client: fix potential UAF in smb2_close_cached_fid()") was an incomplete backport and missed one kref_put() call in cfids_invalidation_worker() that should have been converted to close_cached_dir().
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Meta Information
Published
2025-12-16
Last Modified
2025-12-18
Generated
2026-06-16
AI Q&A
2025-12-16
EPSS Evaluated
2026-06-15
NVD
CVE-2025-68226
EUVD
EUVD-2025-203670
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is related to the Linux kernel's SMB client. It involves an incomplete backport in the function cfids_invalidation_worker(), where a necessary call to close_cached_dir() was missed. This issue stems from a previous fix that addressed a potential use-after-free (UAF) in smb2_close_cached_fid(), but the backport did not fully convert one kref_put() call, potentially leading to improper resource handling.

Impact Analysis

The vulnerability could lead to improper handling of cached SMB directory identifiers, potentially causing use-after-free conditions. This may result in system instability, crashes, or security issues such as memory corruption, which attackers could exploit to compromise the system.

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