Description
A flaw was found in glib. Missing validation of offset and count parameters in the g_buffered_input_stream_peek() function can lead to an integer overflow during length calculation. When specially crafted values are provided, this overflow results in an incorrect size being passed to memcpy(), triggering a buffer overflow. This can cause application crashes, leading to a Denial of Service (DoS).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images | — | — |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — |
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 | 2.86.3-5 | — |
| Debian 13 | glib2.0 | 2.84.4-3~deb13u3 | — |
| Debian 12 | glib2.0 | 2.74.6-2+deb12u9 | — |
| Debian 11 | glib2.0 | 2.66.8-1+deb11u8 | DLA-4491-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | glib2.0 | 2.87.2-2 | — |
| Ubuntu 25.10 | glib2.0 | 2.86.0-2ubuntu0.2 | USN-7971-1 |
| Ubuntu 24.04 LTS | glib2.0 | 2.80.0-6ubuntu3.7 | USN-7971-1 |
| Ubuntu 22.04 LTS | glib2.0 | 2.72.4-0ubuntu2.8 | USN-7971-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | glib2.0 | No fix yet | — |
| 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 |
|---|---|---|---|
| Red Hat Hardened Images 1 | glib2 +4 | 2.88.0-1.1.hum1 | RHSA-2026:7461 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | glib2 | 2.78.6-150600.4.28.1 | SUSE-SU-2026:0286-1 |
| SLES 15 SP5 | glib2 | 2.70.5-150400.3.34.1 | SUSE-SU-2026:0458-1 |
| SLES 15 SP4 | glib2 | 2.70.5-150400.3.34.1 | SUSE-SU-2026:0458-1 |
| SLES 12 SP5 | glib2 | 2.48.2-12.55.1 | SUSE-SU-2026:0266-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | glib2 +1 | 2.84.4-160000.2.1 | SUSE-SU-2026:20221-1 |
| SLES for SAP 15 SP5 | glib2 | 2.70.5-150400.3.34.1 | SUSE-SU-2026:0458-1 |
| SLES for SAP 15 SP4 | glib2 | 2.70.5-150400.3.34.1 | SUSE-SU-2026:0458-1 |
| SLES 16.0 | glib2 +1 | 2.84.4-160000.2.1 | SUSE-SU-2026:20221-1 |
| SLE Micro 6.2 | glib2 | 2.84.4-160000.2.1 | SUSE-SU-2026:20210-1 |
| SLE Micro 6.1 | glib2 | 2.78.6-slfo.1.1_6.1 | SUSE-SU-2026:20493-1 |
| SLE Micro 6.0 | glib2 | 2.76.2-12.1 | SUSE-SU-2026:20446-1 |
| SLE Micro 5.5 | glib2 | 2.70.5-150400.3.34.1 | SUSE-SU-2026:0458-1 |
| SLE Micro 5.4 | glib2 | 2.70.5-150400.3.34.1 | SUSE-SU-2026:0458-1 |
| SLE Micro 5.3 | glib2 | 2.70.5-150400.3.34.1 | SUSE-SU-2026:0458-1 |
| SLE Micro 5.2 | glib2 | 2.62.6-150200.3.39.1 | SUSE-SU-2026:0264-1 |
| SLE HPC 15 SP5 | glib2 | 2.70.5-150400.3.34.1 | SUSE-SU-2026:0458-1 |
| SLE HPC 15 SP4 | glib2 | 2.70.5-150400.3.34.1 | SUSE-SU-2026:0458-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glib2 | 2.86.3-2.1 | openSUSE-SU-2026:10089-1 |
| openSUSE Leap 16.0 | glib2 +1 | 2.84.4-160000.2.1 | openSUSE-SU-2026:20150-1 |
| openSUSE Leap 15.6 | glib2 +1 | 2.78.6-150600.4.28.1 | SUSE-SU-2026:0286-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | glib | 2.78.6-9 | — |
| Azure Linux 2 (CBL-Mariner) | glib | No fix yet | — |
Advisories 14
- 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-2026-0778 Dell Secure Connect Gateway Policy Manager: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- USN-7971-1 glib2.0 vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2026:20150-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2026:10089-1 gio-branding-upstream-2.86.3-2.1 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-2026:20446-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20210-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20221-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0458-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0286-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0266-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-4491-1 glib2.0 - security update Debian Security (DSA / DLA) · Feb 23, 2026
- SUSE-SU-2026:0264-1 Security update for glib2 SUSE / openSUSE Security Updates · Feb 4, 2026
References
- RHSA-2026:7461 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-0988 vdb-entry
- RHBZ#2429886 issue-tracking
- https://gitlab.gnome.org/GNOME/glib/-/issues/3851