Bug 2424954 (CVE-2023-53990)

Summary: CVE-2023-53990 kernel: SMB3: Add missing locks to protect deferred close file list
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-12-24 12:03:22 UTC 
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.
Comment 1 Alexander B 2025-12-25 13:15:19 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122423-CVE-2023-53990-b239@gregkh/T