CVE-2025-71266
Vulnerability Scoring
Analysis In Progress
CVE-2025-71266 Vulnerability Analysis & Exploit Details
CVE-2025-71266
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-2025-71266 Details
Status: Received on 18 Mar 2026, 11:16 UTC
Published on: 18 Mar 2026, 11:16 UTC
CVSS Release:
CVE-2025-71266 Vulnerability Summary
CVE-2025-71266: In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: check return value of indx_find to avoid infinite loop We found an infinite loop bug in the ntfs3 file system that can lead to a Denial-of-Service (DoS) condition. A malformed dentry in the ntfs3 filesystem can cause the kernel to hang during the lookup operations. By setting the HAS_SUB_NODE flag in an INDEX_ENTRY within a directory's INDEX_ALLOCATION block and manipulating the VCN pointer, an attacker can cause the indx_find() function to repeatedly read the same block, allocating 4 KB of memory each time. The kernel lacks VCN loop detection and depth limits, causing memory exhaustion and an OOM crash. This patch adds a return value check for fnd_push() to prevent a memory exhaustion vulnerability caused by infinite loops. When the index exceeds the size of the fnd->nodes array, fnd_push() returns -EINVAL. The indx_find() function checks this return value and stops processing, preventing further memory allocation.
Assessing the Risk of CVE-2025-71266
Access Complexity Graph
The exploitability of CVE-2025-71266 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-2025-71266
No exploitability data is available for CVE-2025-71266.
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-2025-71266, 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-2025-71266, 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-2025-71266 does not compromise confidentiality.
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Integrity:
None
CVE-2025-71266 does not impact data integrity.
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Availability:
None
CVE-2025-71266 does not affect system availability.
CVE-2025-71266 References
External References
- https://git.kernel.org/stable/c/0ad7a1be44479503dbe5c699759861ef5b8bd70c
- https://git.kernel.org/stable/c/14c3188afbedfd5178bbabb8002487ea14b37b56
- https://git.kernel.org/stable/c/1732053c8a6b360e2d5afb1b34fe9779398b072c
- https://git.kernel.org/stable/c/398e768d1accd1f5645492ab996005d7aa84a5b0
- https://git.kernel.org/stable/c/435d34719db0e130f6f0c621d67ed524cc1a7d10
- https://git.kernel.org/stable/c/68e32694be231c1cdb99b7637a657314e88e1a96
- https://git.kernel.org/stable/c/b0ea441f44ce64fa514a415d4a9e6e2b06e7946c
CWE Common Weakness Enumeration
Unknown
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