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Vulnerability record · CVE-2026-38640 · published 25 June 2026

CVE-2026-38640: Uncontrolled resource consumption vulnerability

A reachable unwrap in the __assert_fail function (/assert/mod.rs) of relibc commit 61f42d allows attackers to cause a Denial of Service (DoS) via a crafted string.

7.5 CVSS 3.1 High EPSS 0.63% · top 51.9% CWE-400 · Uncontrolled resource consumption Deferred
7.5CVSS 3.1 base score
0.63%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
26 Jun 2026Last modified by NVD

Description

A reachable unwrap in the __assert_fail function (/assert/mod.rs) of relibc commit 61f42d allows attackers to cause a Denial of Service (DoS) via a crafted string.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

LinkTags
https://github.com/Marsman1996/pocs/tree/master/redox/CVE-2026-38640
https://gitlab.redox-os.org/redox-os/relibc/-/issues/262
https://gitlab.redox-os.org/redox-os/relibc/-/merge_requests/986
https://gitlab.redox-os.org/redox-os/relibc/-/work_items/262

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Source: NIST National Vulnerability Database (record CVE-2026-38640), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.