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Vulnerability DatabaseCVE-2025-38067
CVE-2025-38067:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2025-38067 is a vulnerability discovered in the Linux kernel related to the rseq (Restartable Sequences) functionality. The issue was disclosed on June 18, 2025, and affects multiple versions of the Linux kernel, including versions 5.10.223-1, 6.1.137-1, and 6.12.31-1 (Debian Tracker, NVD).
Technical details
The vulnerability occurs when the rseq_cs field, which is documented to be set to 0 by user-space prior to registration, is not enforced by the kernel. This can lead to a segmentation fault when returning to user-space if the value stored in the rseq_cs field doesn't point to a valid struct rseq_cs (NVD).
Impact
When exploited, this vulnerability can cause a segmentation fault in the affected system, potentially leading to system crashes or denial of service conditions (Wiz).
Mitigation and workarounds
The recommended mitigation involves clearing the rseq_cs field on registration when it's non-zero. This solution prevents segfaults on registration while maintaining compatibility with older glibc versions that reuse rseq areas on thread creation (NVD).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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