CVE-2026-15588

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

State: Published
Severity: 5.3 Medium
Published: Jul 20, 2026
Updated: Oct 30, 2026
Reserved: Jul 13, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L	redhat

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
Red Hat Enterprise Linux 10Red Hat	0:2.80.4-12.el10_2.21 and laterNot affected
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat	0:2.80.4-4.el10_0.17 and laterNot affected
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat	0:2.56.1-13.el7_9.1 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:2.56.4-177.el8_10 and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat	0:2.56.4-10.el8_4.7 and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat	0:2.56.4-10.el8_4.7 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat	0:2.56.4-158.el8_6.7 and laterNot affected
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat	0:2.56.4-158.el8_6.7 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat	0:2.56.4-165.el8_8.2 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	0:2.56.4-165.el8_8.2 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:2.68.4-19.el9_8.9 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:2.68.4-19.el9_8.9 and laterNot affected
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat	0:2.68.4-7.el9_2.7 and laterNot affected
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat	0:2.68.4-14.el9_4.8 and laterNot affected
Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat	0:2.68.4-16.el9_6.7 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.17Red Hat	1791371080 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.17Red Hat	1791371069 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.17Red Hat	1791788287 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.17Red Hat	1791378395 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.17Red Hat	1791970484 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat	1791459707 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat	1791459711 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat	1791459759 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat	1789029076 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.18Red Hat	1791966259 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.19Red Hat	1788348522 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.19Red Hat	1788348571 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.19Red Hat	1788348571 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.19Red Hat	1788348594 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.20Red Hat	1790223279 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.20Red Hat	1790223719 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.20Red Hat	1790272426 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.20Red Hat	1790589998 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.20Red Hat	1790589912 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.20Red Hat	1790589914 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.20Red Hat	1790589855 and laterNot affected
Cert Manager support for Red Hat OpenShift release 1.20Red Hat	1790598593 and laterNot affected
Red Hat AI Inference Server 3.2Red Hat	1790621714 and laterNot affected
Red Hat AI Inference Server 3.2Red Hat	1790621718 and laterNot affected
Red Hat AI Inference Server 3.2Red Hat	1790621713 and laterNot affected
Red Hat AI Inference Server 3.5Red Hat	1791425869 and laterNot affected
Red Hat AI Inference Server 3.5Red Hat	1791427182 and laterNot affected
Red Hat AI Inference Server 3.5Red Hat	1791803821 and laterNot affected
Red Hat AI Inference Server 3.5Red Hat	1791473631 and laterNot affected
Red Hat AI Inference Server 3.5Red Hat	1791818357 and laterNot affected
Red Hat AI Inference Server 3.5Red Hat	1791473614 and laterNot affected
Red Hat Discovery 2Red Hat	1788205779 and laterNot affected
Red Hat Discovery 2Red Hat	1788206196 and laterNot affected
Red Hat Enterprise Linux AI 3.5Red Hat	1793206758 and laterNot affected
Red Hat Enterprise Linux AI 3.5Red Hat	1793194817 and laterNot affected
Red Hat Enterprise Linux AI 3.5Red Hat	1793194815 and laterNot affected
Red Hat Enterprise Linux AI 3.5Red Hat	1793194834 and laterNot affected
Red Hat Enterprise Linux AI 3.5Red Hat	1793135861 and laterNot affected
Red Hat Enterprise Linux AI 3.5Red Hat	1793194815 and laterNot affected
Red Hat Enterprise Linux AI 3.5Red Hat	1793135863 and laterNot affected
Red Hat Hardened ImagesRed Hat	2.89.1-1.1.hum1 and laterNot affected
Red Hat Hardened ImagesRed Hat	2.89.1-1.2.hum1 and laterNot affected
Red Hat Hardened ImagesRed Hat	2.89.2-2.hum1 and laterNot affected
Red Hat OpenShift AI 3.0Red Hat	1790276886 and laterNot affected
Red Hat OpenShift AI 3.0Red Hat	1790276884 and laterNot affected
Red Hat OpenShift AI 3.0Red Hat	1790277045 and laterNot affected
Red Hat OpenShift AI 3.0Red Hat	1790276889 and laterNot affected
Red Hat OpenShift AI 3.0Red Hat	1790276974 and laterNot affected
Red Hat OpenShift AI 3.2Red Hat	1790703497 and laterNot affected
Red Hat OpenShift AI 3.2Red Hat	1790703506 and laterNot affected
Red Hat OpenShift AI 3.2Red Hat	1790703590 and laterNot affected
Red Hat OpenShift AI 3.2Red Hat	1790703568 and laterNot affected
Red Hat OpenShift AI 3.2Red Hat	1790703586 and laterNot affected
Red Hat OpenShift AI 3.2Red Hat	1790703494 and laterNot affected
Red Hat OpenShift AI 3.4Red Hat	1790703542 and laterNot affected
Red Hat OpenShift AI 3.4Red Hat	1790703539 and laterNot affected
Red Hat OpenShift AI 3.4Red Hat	1790703553 and laterNot affected
Red Hat OpenShift AI 3.4Red Hat	1790703631 and laterNot affected
Red Hat OpenShift AI 3.4Red Hat	1790703597 and laterNot affected
Red Hat OpenShift AI 3.4Red Hat	1790703641 and laterNot affected
Red Hat OpenShift AI 3.4Red Hat	1790703630 and laterNot affected
Red Hat OpenShift AI 3.4Red Hat	1790703541 and laterNot affected
Red Hat OpenShift AI 3.4Red Hat	1790703545 and laterNot affected
Red Hat OpenShift AI 3.4Red Hat	1791231926 and laterNot affected
Red Hat OpenShift AI 3.4Red Hat	1791232048 and laterNot affected
Red Hat OpenShift AI 3.5Red Hat	1790703552 and laterNot affected
Red Hat OpenShift AI 3.5Red Hat	1790703656 and laterNot affected
Red Hat OpenShift AI 3.5Red Hat	1790703557 and laterNot affected
Red Hat OpenShift AI 3.5Red Hat	1790703707 and laterNot affected
Red Hat OpenShift AI 3.5Red Hat	1790703645 and laterNot affected
Red Hat OpenShift AI 3.5Red Hat	1790703554 and laterNot affected
Red Hat OpenShift AI 3.5Red Hat	1790703554 and laterNot affected
Red Hat OpenShift AI 3.5Red Hat	1790703630 and laterNot affected
Red Hat OpenShift AI 3.5Red Hat	1790703706 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1787241211 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1787135742 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1787241260 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1788880445 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1788880464 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1788880456 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1788765051 and laterNot affected
Red Hat Update Infrastructure 5Red Hat	1788880581 and laterNot affected
Red Hat Enterprise Linux 10Red Hat
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat Enterprise Linux 9Red Hat
Red Hat OpenShift Container Platform 4Red Hat
Red Hat OpenShift Container Platform 4Red Hat
Red Hat OpenShift Container Platform 5Red Hat

References

RHSA-2026:39985vendor-advisory
RHSA-2026:40485vendor-advisory
RHSA-2026:42329vendor-advisory
RHSA-2026:55440vendor-advisory
RHSA-2026:57015vendor-advisory
RHSA-2026:58981vendor-advisory
RHSA-2026:61766vendor-advisory
RHSA-2026:61783vendor-advisory
RHSA-2026:63135vendor-advisory
RHSA-2026:63138vendor-advisory
RHSA-2026:63140vendor-advisory
RHSA-2026:65762vendor-advisory
RHSA-2026:65763vendor-advisory
RHSA-2026:65767vendor-advisory
RHSA-2026:65768vendor-advisory
RHSA-2026:65769vendor-advisory
RHSA-2026:65770vendor-advisory
RHSA-2026:65771vendor-advisory
RHSA-2026:65773vendor-advisory
RHSA-2026:66018vendor-advisory
RHSA-2026:72394vendor-advisory
RHSA-2026:72395vendor-advisory
RHSA-2026:72399vendor-advisory
RHSA-2026:72470vendor-advisory
RHSA-2026:72475vendor-advisory
RHSA-2026:72476vendor-advisory
RHSA-2026:72502vendor-advisory
RHSA-2026:73859vendor-advisory
RHSA-2026:73909vendor-advisory
RHSA-2026:73929vendor-advisory
RHSA-2026:73930vendor-advisory
RHSA-2026:73959vendor-advisory
RHSA-2026:73960vendor-advisory
RHSA-2026:73961vendor-advisory
RHSA-2026:73962vendor-advisory
RHSA-2026:74458vendor-advisory
RHSA-2026:74459vendor-advisory
RHSA-2026:74460vendor-advisory
RHSA-2026:74461vendor-advisory
RHSA-2026:74462vendor-advisory
RHSA-2026:74463vendor-advisory
RHSA-2026:74674vendor-advisory
RHSA-2026:74677vendor-advisory
RHSA-2026:74678vendor-advisory
RHSA-2026:74679vendor-advisory
RHSA-2026:74681vendor-advisory
RHSA-2026:74683vendor-advisory
RHSA-2026:74685vendor-advisory
RHSA-2026:74687vendor-advisory
RHSA-2026:74688vendor-advisory
RHSA-2026:74771vendor-advisory
RHSA-2026:75652vendor-advisory
RHSA-2026:75654vendor-advisory
RHSA-2026:75655vendor-advisory
RHSA-2026:75657vendor-advisory
RHSA-2026:75658vendor-advisory
RHSA-2026:75659vendor-advisory
RHSA-2026:75660vendor-advisory
RHSA-2026:76042vendor-advisory
RHSA-2026:80769vendor-advisory
RHSA-2026:80771vendor-advisory
RHSA-2026:82059vendor-advisory
RHSA-2026:82061vendor-advisory
RHSA-2026:82066vendor-advisory
RHSA-2026:82304vendor-advisory
RHSA-2026:82322vendor-advisory
RHSA-2026:82336vendor-advisory
RHSA-2026:82347vendor-advisory
RHSA-2026:82354vendor-advisory
RHSA-2026:82368vendor-advisory
RHSA-2026:82371vendor-advisory
RHSA-2026:82372vendor-advisory
RHSA-2026:82415vendor-advisory
RHSA-2026:82857vendor-advisory
RHSA-2026:82888vendor-advisory
RHSA-2026:92449vendor-advisory
RHSA-2026:92452vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-15588vdb-entry
RHBZ#2499675issue-tracking
https://gitlab.gnome.org/GNOME/glib/-/issues/3985

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