CVE-2026-38636 is a vulnerability in the seekdir() function located in /dirent/mod.rs of relibc, a C library implementation for the Redox operating system. The flaw exists in a specific commit (61f42d) and allows attackers to trigger a Denial of Service (DoS) condition by supplying crafted input to the affected function. The vulnerability has been documented in the Redox OS GitLab issue tracker and a proof-of-concept has been published on GitHub. A merge request has been submitted to address the issue. The affected component is part of relibc, which serves as a core system library, making this vulnerability potentially impactful for systems relying on Redox OS. No CVSS score or patch release details are currently available as the entry is in 'Received' status on NVD.