CVE-2026-6368
Description
A flaw was found in glibc (GNU C Library). A local attacker or application using the wordexp function with the WRDE_APPEND flag can trigger the interface to return invalid memory in the we_wordv member. This invalid memory, when subsequently processed by wordfree, may cause the process to abort, leading to a Denial of Service (DoS).
Statement
This flaw in glibc has Moderate impact, as it can lead to a denial of service. Exploitation requires an application to specifically call wordexp with the WRDE_APPEND flag, followed by a wordfree call, which can result in a process abort. This vulnerability affects applications that utilize this particular programming pattern.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | N/A | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | None | N/A | N/A |
| Integrity Impact | None | N/A | N/A |
| Availability Impact | High | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Availability,Integrity
Technical Impact: DoS: Crash, Exit, or Restart
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