CVE-2023-53276
Vulnerability Scoring
Analysis In Progress
CVE-2023-53276 Vulnerability Analysis & Exploit Details
CVE-2023-53276
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2023-53276 Details
Status: Awaiting Analysis
Published on: 16 Sep 2025, 08:15 UTC
CVSS Release:
CVE-2023-53276 Vulnerability Summary
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.
Assessing the Risk of CVE-2023-53276
Access Complexity Graph
The exploitability of CVE-2023-53276 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2023-53276
No exploitability data is available for CVE-2023-53276.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2023-53276, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2023-53276, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2023-53276 does not compromise confidentiality.
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Integrity:
None
CVE-2023-53276 does not impact data integrity.
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Availability:
None
CVE-2023-53276 does not affect system availability.
CVE-2023-53276 References
External References
- https://git.kernel.org/stable/c/107d481642c356a5668058066360fc473911e628
- https://git.kernel.org/stable/c/1e43d4284bdc3bd34bd770fea13910ac37ab0618
- https://git.kernel.org/stable/c/1fb815b38bb31d6af9bd0540b8652a0d6fe6cfd3
- https://git.kernel.org/stable/c/29738e1bcc799dd754711d4e4aab967f0c018175
- https://git.kernel.org/stable/c/823f554747f8aafaa965fb2f3ae794110ed429ef
- https://git.kernel.org/stable/c/8ad8c67a897e68426e85990ebfe0a7d1f71fc79f
- https://git.kernel.org/stable/c/b8f444a4fadfb5070ed7e298e0a5ceb4a18014f3
- https://git.kernel.org/stable/c/ce840284929b75dbbf062e0ce7fcb78a63b08b5e
- https://git.kernel.org/stable/c/fd197308c0e4f738c7ea687d5332035c5753881c
CWE Common Weakness Enumeration
Unknown
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