This security update addresses multiple vulnerabilities in the mingw-glib2 library for Red Hat Enterprise Linux 8, including buffer underflows, over-reads, an off-by-one error, path traversal, and integer underflow, which can lead to heap corruption and other security impacts. The CVSS scores for the listed CVEs range from 5.6 to 6.5. Affected versions include glib versions prior to 2.86.3 for CVE-2025-14087 and prior to 2.86.5 for several other CVEs, requiring an update to the patched mingw-glib2 packages provided by Red Hat.
Red Hat Product Errata RHSA-2026:49512 - Security Advisory Issued: 2026-08-03 Updated: 2026-08-03 RHSA-2026:49512 - Security Advisory Overview Updated Packages Synopsis Important: mingw-glib2 security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for mingw-glib2 is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. 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. Description 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: GLib: Buffer underflow in GVariant parser leads to heap corruption (CVE-2025-14087) 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) glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml" (CVE-2026-58016) 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. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat CodeReady Linux Builder for x86_64 8 x86_64 Fixes BZ - 2419093 - CVE-2025-14087 glib: GLib: Buffer underflow in GVariant parser leads to heap corruption BZ - 2492243 - CVE-2026-58010 glib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() BZ - 2492245 - CVE-2026-58011 glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid GDateTime BZ - 2492247 - CVE-2026-58012 glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char() BZ - 2492248 - CVE-2026-58013 glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" BZ - 2492255 - CVE-2026-58014 glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" BZ - 2492256 - CVE-2026-58015 glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive BZ - 2492257 - CVE-2026-58016 glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml" CVEs CVE-2025-14087 CVE-2026-58010 CVE-2026-58011 CVE-2026-58012 CVE-2026-58013 CVE-2026-58014 CVE-2026-58015 CVE-2026-58016 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat CodeReady Linux Builder for x86_64 8 SRPM mingw-glib2-2.70.1-9.el8_10.src.rpm SHA-256: ba40266a6ec484a66544b4eeaaca6a5ef63867ed8136e6e9f16036d0ba1f3c41 x86_64 mingw32-glib2-2.70.1-9.el8_10.noarch.rpm SHA-256: 55364c92478823b198e8e0a677c89525bcbf0a2bfc0edd1a3cbd43c03e33760a mingw32-glib2-debuginfo-2.70.1-9.el8_10.noarch.rpm SHA-256: 9c3dba60335c228f6167c94da8281a7c0c25830f37ae83c6d63065091abc0b12 mingw32-glib2-static-2.70.1-9.el8_10.noarch.rpm SHA-256: e313c84906c17386bd77d10e616f385df6024d029ac010fa2fadbffe5489748a mingw64-glib2-2.70.1-9.el8_10.noarch.rpm SHA-256: 6ed38bb7d002b07147c13297d33d4776a539103f1c693bded4108f0cd93c6e96 mingw64-glib2-debuginfo-2.70.1-9.el8_10.noarch.rpm SHA-256: ccfdf613e868805eed691a3bd4f6ba788fe02ac6274659a155038240216c24d5 mingw64-glib2-static-2.70.1-9.el8_10.noarch.rpm SHA-256: 4647a53f9cc542f76b362581f1b2ac0b59956b374662822e9149b7a1e9b1d781 The Red Hat security contact is secalert@redhat.com . More contact details at https://access.redhat.com/security/team/contact/ .