CVE-2023-53276

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-53276
In the Linux kernel, the following vulnerability has been resolved: ubifs: Free memory for tmpfile name When opening a ubifs tmpfile on an encrypted directory, function fscrypt_setup_filename allocates memory for the name that is to be stored in the directory entry, but after the name has been copied to the directory entry inode, the memory 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 'tmpfile' just opening a tmpfile: unreferenced object 0xffff88810178f380 (size 32): comm "tmpfile", pid 509, jiffies 4294934744 (age 1524.742s) backtrace: __kmem_cache_alloc_node __kmalloc fscrypt_setup_filename ubifs_tmpfile vfs_tmpfile path_openat Free this memory after it has been copied to the inode.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/107d481642c356a5668058066360fc473911e628 Patch
https://git.kernel.org/stable/c/1e43d4284bdc3bd34bd770fea13910ac37ab0618 Patch
https://git.kernel.org/stable/c/1fb815b38bb31d6af9bd0540b8652a0d6fe6cfd3 Patch
https://git.kernel.org/stable/c/29738e1bcc799dd754711d4e4aab967f0c018175 Patch
https://git.kernel.org/stable/c/823f554747f8aafaa965fb2f3ae794110ed429ef Patch
https://git.kernel.org/stable/c/8ad8c67a897e68426e85990ebfe0a7d1f71fc79f Patch
https://git.kernel.org/stable/c/b8f444a4fadfb5070ed7e298e0a5ceb4a18014f3 Patch
https://git.kernel.org/stable/c/ce840284929b75dbbf062e0ce7fcb78a63b08b5e Patch
https://git.kernel.org/stable/c/fd197308c0e4f738c7ea687d5332035c5753881c Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

03 Dec 2025, 16:53

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/107d481642c356a5668058066360fc473911e628 - () https://git.kernel.org/stable/c/107d481642c356a5668058066360fc473911e628 - Patch
References () https://git.kernel.org/stable/c/1e43d4284bdc3bd34bd770fea13910ac37ab0618 - () https://git.kernel.org/stable/c/1e43d4284bdc3bd34bd770fea13910ac37ab0618 - Patch
References () https://git.kernel.org/stable/c/1fb815b38bb31d6af9bd0540b8652a0d6fe6cfd3 - () https://git.kernel.org/stable/c/1fb815b38bb31d6af9bd0540b8652a0d6fe6cfd3 - Patch
References () https://git.kernel.org/stable/c/29738e1bcc799dd754711d4e4aab967f0c018175 - () https://git.kernel.org/stable/c/29738e1bcc799dd754711d4e4aab967f0c018175 - Patch
References () https://git.kernel.org/stable/c/823f554747f8aafaa965fb2f3ae794110ed429ef - () https://git.kernel.org/stable/c/823f554747f8aafaa965fb2f3ae794110ed429ef - Patch
References () https://git.kernel.org/stable/c/8ad8c67a897e68426e85990ebfe0a7d1f71fc79f - () https://git.kernel.org/stable/c/8ad8c67a897e68426e85990ebfe0a7d1f71fc79f - Patch
References () https://git.kernel.org/stable/c/b8f444a4fadfb5070ed7e298e0a5ceb4a18014f3 - () https://git.kernel.org/stable/c/b8f444a4fadfb5070ed7e298e0a5ceb4a18014f3 - Patch
References () https://git.kernel.org/stable/c/ce840284929b75dbbf062e0ce7fcb78a63b08b5e - () https://git.kernel.org/stable/c/ce840284929b75dbbf062e0ce7fcb78a63b08b5e - Patch
References () https://git.kernel.org/stable/c/fd197308c0e4f738c7ea687d5332035c5753881c - () https://git.kernel.org/stable/c/fd197308c0e4f738c7ea687d5332035c5753881c - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-401
First Time Linux
Linux linux Kernel
Information

Published : 2025-09-16 08:15

Updated : 2025-12-03 16:53

NVD link : CVE-2023-53276

Mitre link : CVE-2023-53276

CVE.ORG link : CVE-2023-53276

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime