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Gdbusserver: glib2: gdbusserver pre-authentication dos via unbounded sasl line buffering (Red Hat Red Hat Enterprise Linux 10)

CVE-2026-15588
MEDIUM 5.3

At a glance

Source
NVD
EPSS
EPSS 0.48 % · percentile 41 ()
State
PUBLISHED
Published
Updated
Assigner
redhat
NVD status
Awaiting Analysis

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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.

Weaknesses (CWE)

  • CWE-770 — Allocation of Resources Without Limits or Throttling

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Lredhat
CVSS 3.1MEDIUM 5.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:LNVD · secalert@redhat.com (Secondary)

European references

CERT-FR advisories

Affected products

ProductVersions
Red Hat · Red Hat Enterprise Linux 10unaffected 0:2.80.4-12.el10_2.21 < *
Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Supportunaffected 0:2.80.4-4.el10_0.17 < *
Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Supportunaffected 0:2.56.1-13.el7_9.1 < *
Red Hat · Red Hat Enterprise Linux 8unaffected 0:2.56.4-177.el8_10 < *
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportunaffected 0:2.56.4-10.el8_4.7 < *
Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onunaffected 0:2.56.4-10.el8_4.7 < *
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 0:2.56.4-158.el8_6.7 < *
Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onunaffected 0:2.56.4-158.el8_6.7 < *
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 0:2.56.4-165.el8_8.2 < *
Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsunaffected 0:2.56.4-165.el8_8.2 < *
Red Hat · Red Hat Enterprise Linux 9unaffected 0:2.68.4-19.el9_8.9 < *
Red Hat · Red Hat Enterprise Linux 9unaffected 0:2.68.4-19.el9_8.9 < *
Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutionsunaffected 0:2.68.4-7.el9_2.7 < *
Red Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP Solutionsunaffected 0:2.68.4-14.el9_4.8 < *
Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Supportunaffected 0:2.68.4-16.el9_6.7 < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.17unaffected 1791371080 < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.17unaffected 1791371069 < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.17unaffected 1791788287 < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.17unaffected 1791378395 < *
Red Hat · Cert Manager support for Red Hat OpenShift release 1.17unaffected 1791970484 < *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD