CVE-2026-15588

MEDIUM 5.3

Gdbusserver: glib2: gdbusserver pre-authentication dos via unbounded sasl line buffering

CVSS Score

5.3

EPSS Score

0.5%

EPSS Percentile

40th

A denial-of-service and resource exhaustion vulnerability exists within the `GDBus` component of GLib. The `gdbusauth` authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang.

CWE	CWE-770
Vendor	red hat
Product	red hat enterprise linux 10
Published	Jul 20, 2026
Last Updated	Oct 14, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Affected Versions

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 8.4 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 1.17

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.17

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.17

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.17

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.17

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.18

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.18

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.18

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.18

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.18

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 / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Red Hat AI Inference Server 3.2

All versions affected

Red Hat / Red Hat AI Inference Server 3.2

All versions affected

Red Hat / Red Hat AI Inference Server 3.2

All versions affected

Red Hat / Red Hat AI Inference Server 3.5

All versions affected

Red Hat / Red Hat AI Inference Server 3.5

All versions affected

Red Hat / Red Hat AI Inference Server 3.5

All versions affected

Red Hat / Red Hat AI Inference Server 3.5

All versions affected

Red Hat / Red Hat AI Inference Server 3.5

All versions affected

Red Hat / Red Hat AI Inference Server 3.5

All versions affected

Red Hat / Red Hat Discovery 2

All versions affected

Red Hat / Red Hat Discovery 2

All versions affected

Red Hat / Red Hat Hardened Images

All versions affected

Red Hat / Red Hat Hardened Images

All versions affected

Red Hat / Red Hat Hardened Images

All versions affected

Red Hat / Red Hat OpenShift AI 3.0

All versions affected

Red Hat / Red Hat OpenShift AI 3.0

All versions affected

Red Hat / Red Hat OpenShift AI 3.0

All versions affected

Red Hat / Red Hat OpenShift AI 3.0

All versions affected

Red Hat / Red Hat OpenShift AI 3.0

All versions affected

Red Hat / Red Hat OpenShift AI 3.2

All versions affected

Red Hat / Red Hat OpenShift AI 3.2

All versions affected

Red Hat / Red Hat OpenShift AI 3.2

All versions affected

Red Hat / Red Hat OpenShift AI 3.2

All versions affected

Red Hat / Red Hat OpenShift AI 3.2

All versions affected

Red Hat / Red Hat OpenShift AI 3.2

All versions affected