Description
A flaw was found in GLib, which is vulnerable to an integer overflow in the g_string_insert_unichar() function. When the position at which to insert the character is large, the position will overflow, leading to a buffer underwrite.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | glib | < 2.84.2 | 2.84.2 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | — | — |
| Red Hat | Red Hat Insights proxy 1.5 | — | — |
| Red Hat | Red Hat OpenShift distributed tracing 3.6.0 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | glib2.0 | 2.84.1-3 | — |
| Debian 13 | glib2.0 | 2.84.1-3 | — |
| Debian 12 | glib2.0 | 2.74.6-2+deb12u7 | — |
| Debian 11 | glib2.0 | 2.66.8-1+deb11u7 | DLA-4412-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | glib2.0 | 2.80.0-6ubuntu3.4 | USN-7532-1 |
| Ubuntu 22.04 LTS | glib2.0 | 2.72.4-0ubuntu2.5 | USN-7532-1 |
| Ubuntu 20.04 LTS | glib2.0 | 2.64.6-1~ubuntu20.04.9 | USN-7532-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | glib2.0 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | glib2.0 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | glib2.0 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | glib2 +4 | 2.80.4-4.el10_0.6 | RHSA-2025:10855 |
| RHEL 9 | glib2 +4 | 2.68.4-16.el9_6.2 | RHSA-2025:11140 |
| RHEL 8 | glib2 +5 | 2.56.4-166.el8_10 | RHSA-2025:11327 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.4 EUS | glib2 +4 | 2.68.4-14.el9_4.3 | RHSA-2025:11374 |
| RHEL 9.2 E4S | glib2 +3 | 2.68.4-7.el9_2.2 | RHSA-2025:11373 |
| RHEL 9.0 E4S | glib2 +3 | 2.68.4-5.el9_0.2 | RHSA-2025:12275 |
| RHEL 8.8 TUS | glib2 +3 | 2.56.4-162.el8_8 | RHSA-2025:14989 |
| RHEL 8.8 E4S | glib2 +3 | 2.56.4-162.el8_8 | RHSA-2025:14989 |
| RHEL 8.6 TUS | glib2 +3 | 2.56.4-158.el8_6.2 | RHSA-2025:14988 |
| RHEL 8.6 E4S | glib2 +3 | 2.56.4-158.el8_6.2 | RHSA-2025:14988 |
| RHEL 8.6 AUS | glib2 +3 | 2.56.4-158.el8_6.2 | RHSA-2025:14988 |
| RHEL 8.4 EUS Long Life | glib2 +3 | 2.56.4-10.el8_4.2 | RHSA-2025:14990 |
| RHEL 8.4 AUS | glib2 +3 | 2.56.4-10.el8_4.2 | RHSA-2025:14990 |
| RHEL 8.2 AUS | glib2 +3 | 2.56.4-8.el8_2.2 | RHSA-2025:14991 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | glib2 +4 | 2.68.4-16.el9_6.2 | ALSA-2025:11140 |
| AlmaLinux 8 | glib2 +5 | 2.56.4-166.el8_10 | ALSA-2025:11327 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | glib2 | 2.80.4-4.el10_0.6 | RLSA-2025:10855 |
| Rocky Linux 9 | glib2 | 2.68.4-16.el9_6.2 | RLSA-2025:11140 |
| Rocky Linux 8 | glib2 | 2.56.4-166.el8_10 | RLSA-2025:11327 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | glib2 | 2.78.6-150600.4.16.1 | SUSE-SU-2025:02167-1 |
| SLES 15 SP6 | glib2 | 2.78.6-150600.4.16.1 | SUSE-SU-2025:02167-1 |
| SLES 12 SP5 | glib2 | 2.48.2-12.46.1 | SUSE-SU-2025:02233-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 6.1 | glib2 | 2.78.6-slfo.1.1_3.1 | SUSE-SU-2025:20471-1 |
| SLE Micro 6.0 | glib2 | 2.76.2-9.1 | SUSE-SU-2025:20508-1 |
| SLE Micro 5.5 | glib2 | 2.70.5-150400.3.23.1 | SUSE-SU-2025:02375-1 |
| SLE Micro 5.4 | glib2 | 2.70.5-150400.3.23.1 | SUSE-SU-2025:02375-1 |
| SLE Micro 5.3 | glib2 | 2.70.5-150400.3.23.1 | SUSE-SU-2025:02375-1 |
| SLE Micro 5.2 | glib2 | 2.62.6-150200.3.30.1 | SUSE-SU-2025:01880-1 |
| SLE Micro 5.1 | glib2 | 2.62.6-150200.3.30.1 | SUSE-SU-2025:01880-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | glib2 +1 | 2.78.6-150600.4.16.1 | SUSE-SU-2025:02167-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | glib | 2.78.6-3 | — |
| Azure Linux 2 (CBL-Mariner) | glib | 2.71.0-7 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | glib2 +4 | 2.80.4-4.el10_0.6 | ELSA-2025-10855 |
| Oracle Linux 9 | glib2 +4 | 2.68.4-16.el9_6.2 | ELSA-2025-11140 |
| Oracle Linux 8 | glib2 +5 | 2.56.4-166.el8_10 | ELSA-2025-11327 |
Advisories 36
- ALSA-2025:11140 Moderate: glib2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:11327 Moderate: glib2 security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2025:14990 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:14991 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:14988 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:14989 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:12275 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:11373 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:11374 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:11327 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:11140 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:10855 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- SSA-082556 SSA-082556: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.5 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2026-0349 Dell Avamar und NetWorker: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 17, 2026
- ICSA-25-162-05 Siemens SIMATIC S7-1500 CPU family CISA ICS & IT advisories · May 14, 2026
- USN-7532-1 glib2.0 vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- SUSE-SU-2025:02375-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20508-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20471-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- WID-SEC-2025-1905 IBM QRadar SIEM Komponente: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 4, 2026
- ICSA-26-043-06 Siemens SINEC OS CISA ICS & IT advisories · Feb 25, 2026
- SSA-089022 SSA-089022: Multiple Vulnerabilities in Third-Party Components in SINEC OS before V3.3 Siemens ProductCERT · Feb 24, 2026
- SUSE-SU-2025:01880-1 Security update for glib2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:02233-1 Security update for glib2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:02167-1 Security update for glib2 SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-1546 Red Hat Enterprise Linux (GLib): Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jan 21, 2026
- DLA-4412-1 glib2.0 - security update Debian Security (DSA / DLA) · Dec 16, 2025
- WID-SEC-2025-2361 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 17, 2025
- NCSC-2025-0330 Kwetsbaarheden verholpen in Oracle Communications producten NCSC-NL (Netherlands) · Oct 23, 2025
- RLSA-2025:10855 Moderate: glib2 security update Rocky Linux Security Advisories · Oct 8, 2025
- RLSA-2025:11140 Moderate: glib2 security update Rocky Linux Security Advisories · Oct 7, 2025
- RLSA-2025:11327 Moderate: glib2 security update Rocky Linux Security Advisories · Jul 29, 2025
- ELSA-2025-10855 Moderate: glib2 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 16, 2025
- ELSA-2025-11327 Moderate: glib2 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 16, 2025
- ELSA-2025-11140 Moderate: glib2 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 15, 2025
- NCSC-2025-0187 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Jun 10, 2025
References
- RHSA-2025:10855 vendor-advisory
- RHSA-2025:11140 vendor-advisory
- RHSA-2025:11327 vendor-advisory
- RHSA-2025:11373 vendor-advisory
- RHSA-2025:11374 vendor-advisory
- RHSA-2025:11662 vendor-advisory
- RHSA-2025:12275 vendor-advisory
- RHSA-2025:13335 vendor-advisory
- RHSA-2025:14988 vendor-advisory
- RHSA-2025:14989 vendor-advisory
- RHSA-2025:14990 vendor-advisory
- RHSA-2025:14991 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2025-4373 vdb-entry
- RHBZ#2364265 issue-tracking
- https://gitlab.gnome.org/GNOME/glib/-/issues/3677