CVE-2026-38640

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-38640", "lastModified": "2026-06-26T20:25:42.033", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-38640", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-26T14:06:28.124215Z", "version": "2.0.3"}}]}, "published": "2026-06-25T21:16:27.030", "references": [{"source": "cve@mitre.org", "url": "https://github.com/Marsman1996/pocs/tree/master/redox/CVE-2026-38640"}, {"source": "cve@mitre.org", "url": "https://gitlab.redox-os.org/redox-os/relibc/-/issues/262"}, {"source": "cve@mitre.org", "url": "https://gitlab.redox-os.org/redox-os/relibc/-/merge_requests/986"}, {"source": "cve@mitre.org", "url": "https://gitlab.redox-os.org/redox-os/relibc/-/work_items/262"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "61f42d"}}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "relibc", "vendor": "redox-os"}], "created": "2026-06-25T23:30:16.935777+00:00", "updated": "2026-06-26T18:30:05.283408+00:00", "vendors": ["redox-os", "redox-os$PRODUCT$relibc"]}