CVE-2026-38637 Details
Description
An issue in the pthread_rwlockattr_setpshared() function of relibc commit 61f42d allows attackers to cause a Denial of Service (DoS) via a crafted input.
A denial-of-service vulnerability has been identified in the relibc library, specifically in the pthread_rwlockattr_setpshared() function of commit 61f42d. This issue allows attackers to cause a program to panic by passing an invalid pshared value, such as a value other than Private or Shared. The vulnerability is local, requiring the attacker to execute a program that sends the crafted input to the affected function.
Users can update to the latest version of relibc, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 25, 2026CISA-ADP
Assessed Jun 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Marsman1996/pocs/tree/master/redox/CVE-2026-38637 | [email protected] | ExploitTechnical Description |
| https://gitlab.redox-os.org/redox-os/relibc/-/issues/264 | [email protected] | Issue TrackingPermission RequiredVendor |
| https://gitlab.redox-os.org/redox-os/relibc/-/merge_requests/987 | [email protected] | Permission RequiredVendor |
| https://gitlab.redox-os.org/redox-os/relibc/-/work_items/264 | [email protected] | Issue TrackingPermission RequiredVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| relibc | 61f42d6b93adc552a9e8b6f207fca907e8ca8be2 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 26, 2026 | CVE Modified | CISA-ADP |
| Jun 25, 2026 | New CVE Received | [email protected] |