RHSA-2026:51182HighCVSS 7.5

Red Hat Security Advisory: glib2 security update

Published
August 6, 2026
Last Modified
September 28, 2026

🔗 CVE IDs covered (1)

CVE-2026-58016 →

📋 Description

CVE-2026-58016 — glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"

🎯 Affected products45

  • Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-0:2.56.4-165.el8_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-0:2.56.4-165.el8_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-0:2.56.4-165.el8_8.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-0:2.56.4-165.el8_8.1.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-0:2.56.4-165.el8_8.1.src as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-0:2.56.4-165.el8_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-0:2.56.4-165.el8_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-debuginfo-0:2.56.4-165.el8_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-debuginfo-0:2.56.4-165.el8_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-debuginfo-0:2.56.4-165.el8_8.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-debuginfo-0:2.56.4-165.el8_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-debuginfo-0:2.56.4-165.el8_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-debugsource-0:2.56.4-165.el8_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-debugsource-0:2.56.4-165.el8_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-debugsource-0:2.56.4-165.el8_8.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-debugsource-0:2.56.4-165.el8_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-debugsource-0:2.56.4-165.el8_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-devel-0:2.56.4-165.el8_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-devel-0:2.56.4-165.el8_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-devel-0:2.56.4-165.el8_8.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-devel-0:2.56.4-165.el8_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-devel-0:2.56.4-165.el8_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-devel-debuginfo-0:2.56.4-165.el8_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-devel-debuginfo-0:2.56.4-165.el8_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-devel-debuginfo-0:2.56.4-165.el8_8.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-devel-debuginfo-0:2.56.4-165.el8_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • glib2-devel-debuginfo-0:2.56.4-165.el8_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS TUS (v.8.8)
  • glib2-fam-0:2.56.4-165.el8_8.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • +15 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To mitigate this vulnerability, implement input validation to sanitize untrusted D-Bus introspection XML, specifically rejecting malformed structures such as <node> elements improperly nested within <method>, <signal>, <property> or <arg> elements before calling g_dbus_node_info_new_for_xml(). Alternatively, restricting the application to only process XML input from trusted, authenticated sources will completely neutralize this issue.

🔗 References (4)