Red Hat alert RHSA-2026:55440-01 (glib2) [LWN.net]

An update for glib2 is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 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. This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

Original: https://access.redhat.com/security/data/csaf/v2/advisories/2026/rhsa-2026_55440.json