CVE-2023-53990

CVE-2023-53990 is a security vulnerability that is still awaiting full analysis and scoring. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

In the Linux kernel, the following vulnerability has been resolved: SMB3: Add missing locks to protect deferred close file list cifs_del_deferred_close function has a critical section which modifies the deferred close file list. We must acquire deferred_lock before calling cifs_del_deferred_close function.

Frequently asked questions

What is CVE-2023-53990?
In the Linux kernel, the following vulnerability has been resolved: SMB3: Add missing locks to protect deferred close file list cifs_del_deferred_close function has a critical section which modifies the deferred close file list. We must acquire deferred_lock before calling cifs_del_deferred_close function.
Is CVE-2023-53990 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-53990?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-53990 have an EU (EUVD) identifier?
Yes. CVE-2023-53990 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-205177.
When was CVE-2023-53990 published?
CVE-2023-53990 was published on 2025-12-24 and last updated on 2026-06-17.

References