GLib g_key_file Off-By-One Array Index Bug Causing OOB Access
CVE-2026-58014 Published on June 30, 2026

Glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list"
A flaw was found in GLib. An off-by-one error can occur in the g_key_file_get_locale_string_list function in the gkeyfile.c file when loading a key file with an empty value. This flaw can cause an out-of-bounds access of 1 byte or a denial of service when the out-of-bounds access crosses a page boundary.

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Vulnerability Analysis

CVE-2026-58014 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. An automatable proof of concept (POC) exploit exists. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
LOW
Availability Impact:
LOW

Timeline

Reported to Red Hat.

Made public.

Weakness Type

What is an off-by-five Vulnerability?

A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.

CVE-2026-58014 has been classified to as an off-by-five vulnerability or weakness.


Products Associated with CVE-2026-58014

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Red Hat Enterprise Linux (RHEL)
 
Red Hat Hummingbird
 
Red Hat Rhui
 
Red Hat Openshift
 
Red Hat Discovery
 
Red Hat Cert Manager
 
Red Hat Rhel Aus
 
Red Hat Rhel Eus Long Life
 
Red Hat Rhel Els
 
Red Hat Rhel E4s
 
Red Hat Enterprise Linux Eus
 
Red Hat Rhel Tus
 
Red Hat Rhel Eus
 

Affected Versions

GNOME GLib: Red Hat Enterprise Linux 10: Red Hat Enterprise Linux 10.0 Extended Update Support: Red Hat Enterprise Linux 7 Extended Lifecycle Support: Red Hat Enterprise Linux 8: Red Hat Enterprise Linux 8: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support: Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On: Red Hat Enterprise Linux 8.8 Telecommunications Update Service: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions: Red Hat Enterprise Linux 9: Red Hat Enterprise Linux 9: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions: Red Hat Enterprise Linux 9.6 Extended Update Support: Cert Manager support for Red Hat OpenShift release 1.19: Cert Manager support for Red Hat OpenShift release 1.19: Cert Manager support for Red Hat OpenShift release 1.19: Cert Manager support for Red Hat OpenShift release 1.19: Red Hat Discovery 2: Red Hat Discovery 2: Red Hat Update Infrastructure 5: Red Hat Update Infrastructure 5: Red Hat Update Infrastructure 5: Red Hat Enterprise Linux 10: Red Hat Enterprise Linux 6: Red Hat Enterprise Linux 9: Red Hat Hardened Images: Red Hat OpenShift Container Platform 4: