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ALSA-2026:55440 — Moderate: glib2 security update

Affected: AlmaLinux:9: glib2, AlmaLinux:9: glib2-devel, AlmaLinux:9: glib2-doc, AlmaLinux:9: glib2-static, AlmaLinux:9: glib2-tests

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Security Fix(es):

* glib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() (CVE-2026-58010) * glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid GDateTime (CVE-2026-58011) * glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char() (CVE-2026-58012) * glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" (CVE-2026-58013) * glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" (CVE-2026-58014) * glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive (CVE-2026-58015) * GDBusServer: glib2: GDBusServer pre-authentication DoS via unbounded SASL line buffering (CVE-2026-15588)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2026-10233

BELL-CVE-2026-15588

Affected: Alpaquita:23: glib, Alpaquita:25: glib, Alpaquita:stream: glib

EUVD-2026-382032

fkie_cve-2026-15588

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.

GHSA-hrq7-vgh7-p534

msrc_CVE-2026-15588 — Gdbusserver: glib2: gdbusserver pre-authentication dos via unbounded sasl line buffering

msrc_CVE-2026-15588

OESA-2026-3241 — glib2 security update

Affected: openEuler:24.03-LTS-SP1: glib2

GLib is a bundle of three (formerly five) low-level system libraries written in C and developed mainly by GNOME. GLib&apos;s code was separated from GTK, so it can be used by software other than GNOME and has been developed in parallel ever since. Security Fix(es):

openSUSE-SU-2026:11415-1 — gio-branding-upstream-2.88.3-1.1 on GA media

gio-branding-upstream-2.88.3-1.1 on GA media

RHSA-2026:39985 — Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

GDBusServer: glib2: GDBusServer pre-authentication DoS via unbounded SASL line buffering

RLSA-2026:55440 — Moderate: glib2 security update

Affected: Rocky Linux:9: glib2

Security Fix(es):

* glib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() (CVE-2026-58010)

* glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid GDateTime (CVE-2026-58011)

* glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char() (CVE-2026-58012)

* glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" (CVE-2026-58013)

* glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" (CVE-2026-58014)

* glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive (CVE-2026-58015)

* GDBusServer: glib2: GDBusServer pre-authentication DoS via unbounded SASL line buffering (CVE-2026-15588)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

SUSE-SU-2026:23880-1 — Security update for glib2

Security update for glib2

UBUNTU-CVE-2026-15588

Affected: Ubuntu:Pro:14.04:LTS: glib2.0, Ubuntu:Pro:16.04:LTS: glib2.0, Ubuntu:Pro:18.04:LTS: glib2.0, Ubuntu:Pro:20.04:LTS: glib2.0, Ubuntu:22.04:LTS: glib2.0, Ubuntu:24.04:LTS: glib2.0, Ubuntu:26.04:LTS: glib2.0

WID-SEC-W-2026-2866 — Red Hat Enterprise Linux (glib2): Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux (glib2) ausnutzen, um einen Denial of Service Angriff durchzuführen und um Informationen offenzulegen.