CVE-2026-58010

MEDIUM 6.5

Glib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal()

CVSS Score

6.5

EPSS Score

0.9%

EPSS Percentile

57th

A flaw was found in GLib. An off-by-one error can occur in the gvs_tuple_is_normal function in the glib/gvariant-serialiser.c file when doing an alignment padding check because the bounds check uses > instead of >=, causing an out-of-bounds read of only 1 byte. This issue can cause a minor information disclosure of 1 byte and a denial of service when the out-of-bounds read crosses a page boundary.

CWE	CWE-126
Vendor	gnome
Product	glib
Published	Jun 30, 2026
Last Updated	Sep 28, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

Low

Affected Versions

GNOME / GLib

0 < 2.86.5 0 < 2.88.1

Red Hat / Red Hat Enterprise Linux 10

All versions affected

Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

All versions affected

Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

All versions affected

Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service

All versions affected

Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Support

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.19

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.19

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.19

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.19

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Red Hat Discovery 2

All versions affected

Red Hat / Red Hat Discovery 2

All versions affected