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CVE-2026-6368

glibc: glibc: Process abort due to invalid memory in wordexp

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 11, 2026

Updated · October 30, 2026

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.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-1341 · Multiple Releases of Same Resource or Handle