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Vulnerability DatabaseCVE-2025-40075
CVE-2025-40075:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2025-40075 was disclosed on October 28, 2025, affecting the Linux kernel. The vulnerability involves the tcp_metrics component, specifically related to the replacement of three dst_dev() calls with a lockdep enabled helper function (NVD).
Technical details
The vulnerability is specifically related to the tcp_metrics component in the Linux kernel, where three dst_dev() function calls needed to be replaced with dst_dev_net_rcu(), a lockdep enabled helper. The issue affects multiple Linux kernel versions across various distributions (Ubuntu Security, Debian Tracker).
Impact
The vulnerability affects multiple Linux distributions including Ubuntu, Debian, and their derivatives. Several kernel versions are marked as vulnerable, including Ubuntu 22.04 LTS and 24.04 LTS, as well as Debian's bullseye, bookworm, and trixie releases (Ubuntu Security, Debian Tracker).
Mitigation and workarounds
A fix has been implemented in Linux kernel version 6.17.6-1 and later. Debian has marked the vulnerability as fixed in version 6.17.7-2 (Debian Tracker).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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