CVE-2026-38640: n/a
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.
AI Analysis
Technical Summary
The vulnerability CVE-2026-38640 affects the relibc library at the __assert_fail function located in /assert/mod.rs. A reachable unwrap operation in this function can be triggered by a crafted string, causing the program to panic and resulting in a Denial of Service. The vulnerability was identified in commit 61f42d of relibc. There is no CVSS score or detailed vendor advisory available, and no patch or remediation level has been disclosed.
Potential Impact
An attacker can exploit this vulnerability by supplying a specially crafted string that triggers the unwrap in the __assert_fail function, causing the affected application or service using relibc to crash. This results in a Denial of Service condition, potentially disrupting availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should monitor relibc updates and consider mitigating exposure by limiting input that could trigger assertion failures if feasible.
CVE-2026-38640: n/a
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-38640 affects the relibc library at the __assert_fail function located in /assert/mod.rs. A reachable unwrap operation in this function can be triggered by a crafted string, causing the program to panic and resulting in a Denial of Service. The vulnerability was identified in commit 61f42d of relibc. There is no CVSS score or detailed vendor advisory available, and no patch or remediation level has been disclosed.
Potential Impact
An attacker can exploit this vulnerability by supplying a specially crafted string that triggers the unwrap in the __assert_fail function, causing the affected application or service using relibc to crash. This results in a Denial of Service condition, potentially disrupting availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should monitor relibc updates and consider mitigating exposure by limiting input that could trigger assertion failures if feasible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-06T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3d97134853345fc174721b
Added to database: 06/25/2026, 21:01:07 UTC
Last enriched: 06/25/2026, 21:16:02 UTC
Last updated: 06/26/2026, 01:07:02 UTC
Views: 6
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