An issue in the with_argv function (/unistd/mod.rs) of relibc commit 61f42d allows attackers to cause a Denial of Service (DoS) via a crafted input.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a n/a affected
Version Status Constraints
n/a affected —

No data.

No data.

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Vendors Products
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Relibc Subscribe

Project Subscriptions

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Redox-os Subscribe
Relibc Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/Marsman1996/pocs/tree/master/redox/CVE-2026-38638 cve-icon cve-icon
https://gitlab.redox-os.org/redox-os/relibc/-/issues/261 cve-icon cve-icon
https://gitlab.redox-os.org/redox-os/relibc/-/merge_requests/989 cve-icon cve-icon
https://gitlab.redox-os.org/redox-os/relibc/-/work_items/261 cve-icon cve-icon
History

Sat, 29 Aug 2026 02:45:00 +0000

Type Values Removed Values Added
Title Denial of Service via Crafted Arguments in relibc's with_argv Function

Sat, 29 Aug 2026 01:30:00 +0000

Type Values Removed Values Added
Title Denial of Service via Crafted Input in relibc's with_argv Function
Weaknesses CWE-20

Fri, 28 Aug 2026 22:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 28 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Title Denial of Service via Crafted Input in relibc's with_argv Function
Weaknesses CWE-20

Fri, 28 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Redox-os
Redox-os relibc
Vendors & Products Redox-os
Redox-os relibc

Fri, 28 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Description An issue in the with_argv function (/unistd/mod.rs) of relibc commit 61f42d allows attackers to cause a Denial of Service (DoS) via a crafted input.
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-28T20:13:44.478Z

Reserved: 2026-04-06T00:00:00.000Z

Link: CVE-2026-38638

cve-icon Vulnrichment

Updated: 2026-08-28T20:13:36.451Z

cve-icon NVD

Status : Received

Published: 2026-08-28T16:17:47.063

Modified: 2026-08-28T22:16:48.893

Link: CVE-2026-38638

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-29T02:30:17Z

Weaknesses