CVE-2025-38637
Vulnerability Scoring
Analysis In Progress
CVE-2025-38637 Vulnerability Analysis & Exploit Details
CVE-2025-38637
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-2025-38637 Details
Status: Awaiting Analysis
Last updated: 🕑 21 Apr 2025, 14:23 UTC
Originally published on: 🕖 18 Apr 2025, 07:15 UTC
Time between publication and last update: 3 days
CVSS Release:
CVE-2025-38637 Vulnerability Summary
CVE-2025-38637: In the Linux kernel, the following vulnerability has been resolved: net_sched: skbprio: Remove overly strict queue assertions In the current implementation, skbprio enqueue/dequeue contains an assertion that fails under certain conditions when SKBPRIO is used as a child qdisc under TBF with specific parameters. The failure occurs because TBF sometimes peeks at packets in the child qdisc without actually dequeuing them when tokens are unavailable. This peek operation creates a discrepancy between the parent and child qdisc queue length counters. When TBF later receives a high-priority packet, SKBPRIO's queue length may show a different value than what's reflected in its internal priority queue tracking, triggering the assertion. The fix removes this overly strict assertions in SKBPRIO, they are not necessary at all.
Assessing the Risk of CVE-2025-38637
Access Complexity Graph
The exploitability of CVE-2025-38637 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-2025-38637
No exploitability data is available for CVE-2025-38637.
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-2025-38637, 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-2025-38637, 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-2025-38637 does not compromise confidentiality.
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Integrity:
None
CVE-2025-38637 does not impact data integrity.
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Availability:
None
CVE-2025-38637 does not affect system availability.
CVE-2025-38637 References
External References
- https://git.kernel.org/stable/c/034b293bf17c124fec0f0e663f81203b00aa7a50
- https://git.kernel.org/stable/c/1284733bab736e598341f1d3f3b94e2a322864a8
- https://git.kernel.org/stable/c/1dcc144c322a8d526b791135604c0663f1af9d85
- https://git.kernel.org/stable/c/2286770b07cb5268c03d11274b8efd43dff0d380
- https://git.kernel.org/stable/c/2f35b7673a3aa3d09b3eb05811669622ebaa98ca
- https://git.kernel.org/stable/c/32ee79682315e6d3c99947b3f38b078a09a66919
- https://git.kernel.org/stable/c/7abc8318ce0712182bf0783dcfdd9a6a8331160e
- https://git.kernel.org/stable/c/864ca690ff135078d374bd565b9872f161c614bc
- https://git.kernel.org/stable/c/ce8fe975fd99b49c29c42e50f2441ba53112b2e8
CWE Common Weakness Enumeration
Unknown
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