Description
A heap-based buffer overflow problem was found in glib through an incorrect calculation of buffer size in the g_escape_uri_string() function. If the string to escape contains a very large number of unacceptable characters (which would need escaping), the calculation of the length of the escaped string could overflow, leading to a potential write off the end of the newly allocated string.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | glib | < 2.86.3 | 2.86.3 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | — | — |
| 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 Enterprise Linux 9.6 Extended Update Support | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.12 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.13 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.14 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.15 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.16 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.17 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.18 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — | — |
| Red Hat | Red Hat Ceph Storage 8 | — | — |
| Red Hat | Red Hat Discovery 2 | — | — |
| Red Hat | Red Hat Hardened Images | — | — |
| Red Hat | Red Hat Insights proxy 1.5 | — | — |
| Red Hat | Red Hat Update Infrastructure 5 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
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 | 2.86.3-1 | — |
| Debian 13 | glib2.0 | 2.84.4-3~deb13u2 | — |
| Debian 12 | glib2.0 | 2.74.6-2+deb12u8 | — |
| Debian 11 | glib2.0 | 2.66.8-1+deb11u7 | DLA-4412-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | glib2.0 | 2.86.0-2ubuntu0.1 | USN-7942-1 |
| Ubuntu 24.04 LTS | glib2.0 | 2.80.0-6ubuntu3.6 | USN-7942-1 |
| Ubuntu 22.04 LTS | glib2.0 | 2.72.4-0ubuntu2.7 | USN-7942-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | glib2.0 | 2.64.6-1~ubuntu20.04.9+esm1 | — |
| Ubuntu Pro 18.04 LTS | glib2.0 | 2.56.4-0ubuntu0.18.04.9+esm5 | — |
| Ubuntu Pro 16.04 LTS | glib2.0 | 2.48.2-0ubuntu4.8+esm5 | — |
| Ubuntu Pro 14.04 LTS | glib2.0 | 2.40.2-0ubuntu1.1+esm7 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | glib2 +4 | 2.80.4-10.el10_1.12 | RHSA-2026:0975 |
| RHEL 10 | mingw-glib2 +4 | 2.87.0-1.el10 | RHSA-2026:18344 |
| RHEL 9 | glib2 +4 | 2.68.4-18.el9_7.1 | RHSA-2026:0936 |
| RHEL 9 | mingw-glib2 +4 | 2.78.6-3.el9 | RHSA-2026:18705 |
| RHEL 8 | glib2 +5 | 2.56.4-168.el8_10 | RHSA-2026:0991 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | glib2 +4 | 2.80.4-4.el10_0.8 | RHSA-2026:1327 |
| RHEL 9.6 EUS | glib2 +4 | 2.68.4-16.el9_6.4 | RHSA-2026:1465 |
| RHEL 9.4 EUS | glib2 +4 | 2.68.4-14.el9_4.5 | RHSA-2026:1326 |
| RHEL 9.2 E4S | glib2 +3 | 2.68.4-7.el9_2.4 | RHSA-2026:1324 |
| RHEL 9.0 E4S | glib2 +3 | 2.68.4-5.el9_0.4 | RHSA-2026:1323 |
| RHEL 8.8 TUS | glib2 +3 | 2.56.4-164.el8_8 | RHSA-2026:1625 |
| RHEL 8.8 E4S | glib2 +3 | 2.56.4-164.el8_8 | RHSA-2026:1625 |
| RHEL 8.6 TUS | glib2 +3 | 2.56.4-158.el8_6.4 | RHSA-2026:1624 |
| RHEL 8.6 E4S | glib2 +3 | 2.56.4-158.el8_6.4 | RHSA-2026:1624 |
| RHEL 8.6 AUS | glib2 +3 | 2.56.4-158.el8_6.4 | RHSA-2026:1624 |
| RHEL 8.4 EUS Long Life | glib2 +3 | 2.56.4-10.el8_4.4 | RHSA-2026:1626 |
| RHEL 8.4 AUS | glib2 +3 | 2.56.4-10.el8_4.4 | RHSA-2026:1626 |
| RHEL 8.2 AUS | glib2 +3 | 2.56.4-8.el8_2.4 | RHSA-2026:1627 |
| RHEL 7 ELS | glib2 +5 | 2.56.1-11.el7_9 | RHSA-2026:1608 |
| Red Hat Hardened Images 1 | glib2 +4 | 2.88.0-1.1.hum1 | RHSA-2026:7461 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | glib2 +4 | 2.80.4-10.el10_1.12 | ALSA-2026:0975 |
| AlmaLinux 10 | mingw32-glib2 +3 | 2.87.0-1.el10 | ALSA-2026:18344 |
| AlmaLinux 9 | glib2 +4 | 2.68.4-18.el9_7.1 | ALSA-2026:0936 |
| AlmaLinux 9 | mingw32-glib2 +3 | 2.78.6-3.el9 | ALSA-2026:18705 |
| AlmaLinux 8 | glib2 +5 | 2.56.4-168.el8_10 | ALSA-2026:0991 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | glib2 | 2.80.4-10.el10_1.12 | RLSA-2026:0975 |
| Rocky Linux 10 | mingw-glib2 | 2.87.0-1.el10 | RLSA-2026:18344 |
| Rocky Linux 9 | glib2 | 2.68.4-18.el9_7.1 | RLSA-2026:0936 |
| Rocky Linux 9 | mingw-glib2 | 2.78.6-3.el9 | RLSA-2026:18705 |
| Rocky Linux 8 | glib2 | 2.56.4-168.el8_10 | RLSA-2026:0991 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | glib2 | 2.78.6-150600.4.25.1 | SUSE-SU-2026:0018-1 |
| SLES 15 SP6 | glib2 | 2.78.6-150600.4.25.1 | SUSE-SU-2026:0018-1 |
| SLES 15 SP5 | glib2 | 2.70.5-150400.3.29.1 | SUSE-SU-2025:4504-1 |
| SLES 15 SP4 | glib2 | 2.70.5-150400.3.29.1 | SUSE-SU-2025:4504-1 |
| SLES 15 SP3 | glib2 | 2.62.6-150200.3.36.1 | SUSE-SU-2025:4442-1 |
Show 20 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | glib2 | 2.48.2-12.52.1 | SUSE-SU-2025:4441-1 |
| SLES for SAP 16.0 | glib2 +1 | 2.84.4-160000.1.1 | SUSE-SU-2026:20032-1 |
| SLES for SAP 16.0 | glib2-branding-SLE | 16-160000.2.2 | SUSE-SU-2026:20032-1 |
| SLES for SAP 15 SP6 | glib2 | 2.78.6-150600.4.25.1 | SUSE-SU-2026:0018-1 |
| SLES for SAP 15 SP5 | glib2 | 2.70.5-150400.3.29.1 | SUSE-SU-2025:4504-1 |
| SLES for SAP 15 SP4 | glib2 | 2.70.5-150400.3.29.1 | SUSE-SU-2025:4504-1 |
| SLES for SAP 15 SP3 | glib2 | 2.62.6-150200.3.36.1 | SUSE-SU-2025:4442-1 |
| SLES 16.0 | glib2 +1 | 2.84.4-160000.1.1 | SUSE-SU-2026:20032-1 |
| SLES 16.0 | glib2-branding-SLE | 16-160000.2.2 | SUSE-SU-2026:20032-1 |
| SLE Micro 6.2 | glib2 | 2.84.4-160000.1.1 | SUSE-SU-2026:20074-1 |
| SLE Micro 6.2 | glib2-branding-SLE | 16-160000.2.2 | SUSE-SU-2026:20074-1 |
| SLE Micro 6.1 | glib2 | 2.78.6-slfo.1.1_6.1 | SUSE-SU-2026:20493-1 |
| SLE Micro 6.0 | glib2 | 2.76.2-11.1 | SUSE-SU-2026:20045-1 |
| SLE Micro 5.5 | glib2 | 2.70.5-150400.3.29.1 | SUSE-SU-2025:4504-1 |
| SLE Micro 5.4 | glib2 | 2.70.5-150400.3.29.1 | SUSE-SU-2025:4504-1 |
| SLE Micro 5.3 | glib2 | 2.70.5-150400.3.29.1 | SUSE-SU-2025:4504-1 |
| SLE Micro 5.2 | glib2 | 2.62.6-150200.3.36.1 | SUSE-SU-2025:4442-1 |
| SLE HPC 15 SP5 | glib2 | 2.70.5-150400.3.29.1 | SUSE-SU-2025:4504-1 |
| SLE HPC 15 SP4 | glib2 | 2.70.5-150400.3.29.1 | SUSE-SU-2025:4504-1 |
| SLE HPC 15 SP3 | glib2 | 2.62.6-150200.3.36.1 | SUSE-SU-2025:4442-1 |
| SUSE Manager Server LTS 4.3 | glib2 | 2.70.5-150400.3.29.1 | SUSE-SU-2025:4504-1 |
| SUSE Manager Proxy LTS 4.3 | glib2 | 2.70.5-150400.3.29.1 | SUSE-SU-2025:4504-1 |
| SUSE Enterprise Storage 7.1 | glib2 | 2.62.6-150200.3.36.1 | SUSE-SU-2025:4442-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glib2 | 2.86.3-1.1 | openSUSE-SU-2025:15810-1 |
| openSUSE Leap 16.0 | glib2 +1 | 2.84.4-160000.1.1 | openSUSE-SU-2026:20018-1 |
| openSUSE Leap 15.6 | glib2 +1 | 2.78.6-150600.4.25.1 | SUSE-SU-2026:0018-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | glib2 +4 | 2.82.2-767.amzn2023 | ALAS2023-2025-1311 |
| Amazon Linux 2 | glib2 +5 | 2.56.1-9.amzn2.0.12 | ALAS2-2025-3094 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | glib | 2.78.6-5 | — |
| Azure Linux 2 (CBL-Mariner) | glib | 2.71.0-8 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | glib2 +4 | 2.80.4-10.el10_1.12 | ELSA-2026-0975 |
| Oracle Linux 10 | mingw32-glib2 +3 | 2.87.0-1.el10 | ELSA-2026-18344 |
| Oracle Linux 9 | glib2 +4 | 2.68.4-18.el9_7.1 | ELSA-2026-0936 |
| Oracle Linux 9 | mingw32-glib2 +3 | 2.78.6-3.el9 | ELSA-2026-18705 |
| Oracle Linux 8 | glib2 +5 | 2.56.4-168.el8_10 | ELSA-2026-0991 |
| Oracle Linux 7 | glib2 +5 | 2.56.1-9.0.3.el7_9 | ELSA-2026-1608 |
Advisories 50
- RHSA-2026:1627 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:1465 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- WID-SEC-2026-1210 Oracle Siebel CRM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 2, 2026
- ALSA-2026:0975 Moderate: glib2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:0936 Moderate: glib2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:18705 Moderate: mingw-glib2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:18344 Moderate: mingw-glib2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:0991 Moderate: glib2 security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:7461 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- WID-SEC-2026-0187 Red Hat Enterprise Linux (glib): Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Sep 29, 2026
- WID-SEC-2026-0349 Dell Avamar und NetWorker: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 17, 2026
- RHSA-2026:18705 Red Hat Security Advisory: mingw-glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:18344 Red Hat Security Advisory: mingw-glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:1626 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:1625 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:1624 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:1608 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:1327 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:1324 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:1326 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:1323 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:0991 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:0975 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- RHSA-2026:0936 Red Hat Security Advisory: glib2 security update Red Hat Security Advisories (RHSA) · Sep 1, 2026
- WID-SEC-2026-1730 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jul 16, 2026
- ELSA-2026-18344 Moderate: mingw-glib2 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 8, 2026
- ICSA-26-188-05 Siemens SINEC OS CISA ICS & IT advisories · Jul 7, 2026
- ELSA-2026-18705 Moderate: mingw-glib2 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 12, 2026
- SSA-253495 SSA-253495: Multiple Vulnerabilities in SINEC OS before V4.0 Siemens ProductCERT · Jun 2, 2026
- RLSA-2026:18344 Moderate: mingw-glib2 security update Rocky Linux Security Advisories · May 29, 2026
- RLSA-2026:18705 Moderate: mingw-glib2 security update Rocky Linux Security Advisories · May 28, 2026
- WID-SEC-2026-0778 Dell Secure Connect Gateway Policy Manager: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- USN-7942-1 glib2.0 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- WID-SEC-2026-0544 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 25, 2026
- openSUSE-SU-2026:20018-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15810-1 gio-branding-upstream-2.86.3-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20493-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20074-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20045-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20032-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0018-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4442-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4441-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- ELSA-2026-1608 Moderate: glib2 security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 11, 2026
- RLSA-2026:0991 Moderate: glib2 security update Rocky Linux Security Advisories · Jan 24, 2026
- RLSA-2026:0975 Moderate: glib2 security update Rocky Linux Security Advisories · Jan 24, 2026
- RLSA-2026:0936 Moderate: glib2 security update Rocky Linux Security Advisories · Jan 22, 2026
- ELSA-2026-0975 Moderate: glib2 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jan 22, 2026
- ELSA-2026-0991 Moderate: glib2 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jan 22, 2026
- ELSA-2026-0936 Moderate: glib2 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jan 21, 2026
References
- RHSA-2026:0936 vendor-advisory
- RHSA-2026:0975 vendor-advisory
- RHSA-2026:0991 vendor-advisory
- RHSA-2026:1323 vendor-advisory
- RHSA-2026:1324 vendor-advisory
- RHSA-2026:1326 vendor-advisory
- RHSA-2026:1327 vendor-advisory
- RHSA-2026:1465 vendor-advisory
- RHSA-2026:1608 vendor-advisory
- RHSA-2026:1624 vendor-advisory
- RHSA-2026:1625 vendor-advisory
- RHSA-2026:1626 vendor-advisory
- RHSA-2026:1627 vendor-advisory
- RHSA-2026:1652 vendor-advisory
- RHSA-2026:1736 vendor-advisory
- RHSA-2026:18344 vendor-advisory
- RHSA-2026:18705 vendor-advisory
- RHSA-2026:2064 vendor-advisory
- RHSA-2026:2072 vendor-advisory
- RHSA-2026:2485 vendor-advisory
- RHSA-2026:2563 vendor-advisory
- RHSA-2026:2633 vendor-advisory
- RHSA-2026:2659 vendor-advisory
- RHSA-2026:2671 vendor-advisory
- RHSA-2026:2974 vendor-advisory
- RHSA-2026:3415 vendor-advisory
- RHSA-2026:4419 vendor-advisory
- RHSA-2026:7461 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2025-13601 vdb-entry
- RHBZ#2416741 issue-tracking
- https://gitlab.gnome.org/GNOME/glib/-/issues/3827
- https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4914