Description
A flaw was found in glib before version 2.63.6. Due to random charset alias, pkexec can leak content from files owned by privileged users to unprivileged ones under the right condition.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Glib | Fixed in glib2 2.63.6 | — |
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 | 2.64.0-1 | — |
| Debian 13 | glib2.0 | 2.64.0-1 | — |
| Debian 12 | glib2.0 | 2.64.0-1 | — |
| Debian 10 | glib2.0 | 2.58.3-2+deb10u4 | DLA-3110-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | glib2.0 | 2.56.4-0ubuntu0.18.04.9 | USN-5189-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | glib2.0 | 2.48.2-0ubuntu4.8+esm1 | USN-5189-1 |
| Ubuntu Pro 14.04 LTS | glib2.0 | 2.40.2-0ubuntu1.1+esm4 | USN-5189-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | glib2 +5 | 2.56.4-156.el8 | RHSA-2021:4385 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | glib2-doc +1 | 2.56.4-156.el8 | ALSA-2021:4385 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | glib2 | 2.56.4-156.el8 | RLSA-2021:4385 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | glib2 | 2.48.2-12.25.1 | SUSE-SU-2022:0828-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | glib2 | 2.48.2-12.25.1 | SUSE-SU-2022:0828-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | glib2 +5 | 2.56.1-9.amzn2.0.5 | ALAS2-2023-2058 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | glib2 +5 | 2.56.4-156.el8 | ELSA-2021-4385 |
Advisories 9
- ALSA-2021:4385 Moderate: glib2 security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2021:4385 Red Hat Security Advisory: glib2 security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- USN-5189-1 A security issue was fixed in GLib Ubuntu Security Notices (USN) · Jun 29, 2026
- DLA-3110-1 glib2.0 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2021:4385 Moderate: glib2 security and bug fix update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2022:0828-1 Security update for glib2 SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-1969 HPE Fabric OS: Mehrere Schwachstellen ermöglichen Privilegieneskalation BSI CERT-Bund (WID) · Aug 6, 2023
- ALAS2-2023-2058 Moderate: glib2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 1, 2023
- ELSA-2021-4385 Moderate: glib2 security and bug fix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 16, 2021
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1938284
- https://access.redhat.com/security/cve/CVE-2021-3800
- https://www.openwall.com/lists/oss-security/2017/06/23/8
- https://gitlab.gnome.org/GNOME/glib/-/commit/3529bb4450a51995
- [debian-lts-announce] 20220915 [SECURITY] [DLA 3110-1] glib2.0 security update mailing-list
- https://security.netapp.com/advisory/ntap-20221028-0004/