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Vulnerability DatabaseCVE-2025-40075
CVE-2025-40075:
Linux Kernel vulnerability analysis and mitigation
Overview
A vulnerability was identified in the Linux kernel's tcpmetrics component, tracked as CVE-2025-40075. The issue was discovered and disclosed on October 28, 2025, affecting the tcpmetrics subsystem where dst_dev() needed to be replaced with a lockdep enabled helper (Red Hat XML).
Technical details
The vulnerability involves the tcpmetrics component of the Linux kernel, specifically requiring the replacement of three dstdev() calls with a lockdep enabled helper function dstdevnet_rcu(). The vulnerability has been assigned a CVSS v3.1 base score of 7.0 with the vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H (Red Hat XML).
Impact
The vulnerability affects multiple versions of Red Hat Enterprise Linux, specifically versions 8, 9, and 10, including both standard and real-time (RT) kernel variants (Red Hat XML).
Mitigation and workarounds
The vulnerability has been resolved in the Linux kernel through the implementation of dstdevnetrcu() as a replacement for the affected dstdev() calls (NVD).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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