CVE-2015-20109

glibc: buffer overflow (read past end of buffer) in internal_fnmatch=>end_pattern with "**(!()" pattern

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Severity

Moderate

Red Hat Product Security

6.2

CVSS 3.1

Review impact separately from score.

Published · June 25, 2023

Updated · November 22, 2025

Description

A vulnerability was found in the GNU C Library (glibc). The end_pattern (called from internal_fnmatch) might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by the use of the fnmatch library function with the **(!() 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 · 6.2
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-404 · Improper Resource Shutdown or Release