In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix memory leak in do_rename If renaming a file in an encrypted directory, function fscrypt_setup_filename allocates memory for a file name. This name is never used, and before returning to the caller the memory for it is not freed. When running kmemleak on it we see that it is registered as a leak. The report below is triggered by a simple program 'rename' that renames a file in an encrypted directory: unreferenced object 0xffff888101502840 (size 32): comm "rename", pid 9404, jiffies 4302582475 (age 435.735s) backtrace: __kmem_cache_alloc_node __kmalloc fscrypt_setup_filename do_rename ubifs_rename vfs_rename do_renameat2 To fix this we can remove the call to fscrypt_setup_filename as it's not needed.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/3a36d20e012903f45714df2731261fdefac900cb cve-icon cve-icon
https://git.kernel.org/stable/c/43b2f7d690697182beed6f71aa57b7249d3cfc9c cve-icon cve-icon
https://git.kernel.org/stable/c/517ddc0259d7a7231486bdafde8035c478bc4088 cve-icon cve-icon
https://git.kernel.org/stable/c/7e264f67b7d6580eff5c2696961039fd05c69258 cve-icon cve-icon
https://git.kernel.org/stable/c/9f565752b328fe53c9e42b7d4e4d89a1da63d738 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025091859-CVE-2023-53396-27d9@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-53396 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-53396 cve-icon
History

Fri, 19 Sep 2025 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Fri, 19 Sep 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Thu, 18 Sep 2025 13:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix memory leak in do_rename If renaming a file in an encrypted directory, function fscrypt_setup_filename allocates memory for a file name. This name is never used, and before returning to the caller the memory for it is not freed. When running kmemleak on it we see that it is registered as a leak. The report below is triggered by a simple program 'rename' that renames a file in an encrypted directory: unreferenced object 0xffff888101502840 (size 32): comm "rename", pid 9404, jiffies 4302582475 (age 435.735s) backtrace: __kmem_cache_alloc_node __kmalloc fscrypt_setup_filename do_rename ubifs_rename vfs_rename do_renameat2 To fix this we can remove the call to fscrypt_setup_filename as it's not needed.
Title ubifs: Fix memory leak in do_rename
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-09-18T13:33:37.360Z

Updated: 2025-09-18T13:33:37.360Z

Reserved: 2025-09-17T14:54:09.738Z

Link: CVE-2023-53396

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-09-18T14:15:42.817

Modified: 2025-09-18T14:15:42.817

Link: CVE-2023-53396

cve-icon Redhat

Severity : Low

Publid Date: 2025-09-18T00:00:00Z

Links: CVE-2023-53396 - Bugzilla