CVE-2025-68799
Vulnerability Scoring
Analysis In Progress
CVE-2025-68799 Vulnerability Analysis & Exploit Details
CVE-2025-68799
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-2025-68799 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-2025-68799 Vulnerability Summary
CVE-2025-68799: In the Linux kernel, the following vulnerability has been resolved: caif: fix integer underflow in cffrml_receive() The cffrml_receive() function extracts a length field from the packet header and, when FCS is disabled, subtracts 2 from this length without validating that len >= 2. If an attacker sends a malicious packet with a length field of 0 or 1 to an interface with FCS disabled, the subtraction causes an integer underflow. This can lead to memory exhaustion and kernel instability, potential information disclosure if padding contains uninitialized kernel memory. Fix this by validating that len >= 2 before performing the subtraction.
Assessing the Risk of CVE-2025-68799
Access Complexity Graph
The exploitability of CVE-2025-68799 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-2025-68799
No exploitability data is available for CVE-2025-68799.
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-2025-68799, 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-2025-68799, 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-2025-68799 does not compromise confidentiality.
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Integrity:
None
CVE-2025-68799 does not impact data integrity.
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Availability:
None
CVE-2025-68799 does not affect system availability.
CVE-2025-68799 References
External References
- https://git.kernel.org/stable/c/21fdcc00656a60af3c7aae2dea8dd96abd35519c
- https://git.kernel.org/stable/c/4ec29714aa4e0601ea29d2f02b461fc0ac92c2c3
- https://git.kernel.org/stable/c/785c7be6361630070790f6235b696da156ac71b3
- https://git.kernel.org/stable/c/8a11ff0948b5ad09b71896b7ccc850625f9878d1
- https://git.kernel.org/stable/c/c54091eec6fed19e94182aa05dd6846600a642f7
- https://git.kernel.org/stable/c/f407f1c9f45bbf5c99fd80b3f3f4a94fdbe35691
- https://git.kernel.org/stable/c/f818cd472565f8b0c2c409b040e0121c5cf8592c
CWE Common Weakness Enumeration
Unknown
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