CVE-2025-68803
Vulnerability Scoring
Analysis In Progress
CVE-2025-68803 Vulnerability Analysis & Exploit Details
CVE-2025-68803
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-2025-68803 Details
Status: Awaiting Analysis
Last updated: 🕐 19 Jan 2026, 13:16 UTC
Originally published on: 🕓 13 Jan 2026, 16:16 UTC
Time between publication and last update: 5 days
CVSS Release:
CVE-2025-68803 Vulnerability Summary
CVE-2025-68803: In the Linux kernel, the following vulnerability has been resolved: NFSD: NFSv4 file creation neglects setting ACL An NFSv4 client that sets an ACL with a named principal during file creation retrieves the ACL afterwards, and finds that it is only a default ACL (based on the mode bits) and not the ACL that was requested during file creation. This violates RFC 8881 section 6.4.1.3: "the ACL attribute is set as given". The issue occurs in nfsd_create_setattr(), which calls nfsd_attrs_valid() to determine whether to call nfsd_setattr(). However, nfsd_attrs_valid() checks only for iattr changes and security labels, but not POSIX ACLs. When only an ACL is present, the function returns false, nfsd_setattr() is skipped, and the POSIX ACL is never applied to the inode. Subsequently, when the client retrieves the ACL, the server finds no POSIX ACL on the inode and returns one generated from the file's mode bits rather than returning the originally-specified ACL.
Assessing the Risk of CVE-2025-68803
Access Complexity Graph
The exploitability of CVE-2025-68803 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-2025-68803
No exploitability data is available for CVE-2025-68803.
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-2025-68803, 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-2025-68803, 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-2025-68803 does not compromise confidentiality.
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Integrity:
None
CVE-2025-68803 does not impact data integrity.
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Availability:
None
CVE-2025-68803 does not affect system availability.
CVE-2025-68803 References
External References
- https://git.kernel.org/stable/c/214b396480061cbc8b16f2c518b2add7fbfa5192
- https://git.kernel.org/stable/c/381261f24f4e4b41521c0e5ef5cc0b9a786a9862
- https://git.kernel.org/stable/c/60dbdef2ebc2317266a385e4debdb1bb0e57afe1
- https://git.kernel.org/stable/c/75f91534f9acdfef77f8fa094313b7806f801725
- https://git.kernel.org/stable/c/913f7cf77bf14c13cfea70e89bcb6d0b22239562
- https://git.kernel.org/stable/c/bf4e671c651534a307ab2fabba4926116beef8c3
- https://git.kernel.org/stable/c/c182e1e0b7640f6bcc0c5ca8d473f7c57199ea3d
CWE Common Weakness Enumeration
Unknown
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