Description
A flaw was found in Glib's content type parsing logic. This buffer underflow vulnerability occurs because the length of a header line is stored in a signed integer, which can lead to integer wraparound for very large inputs. This results in pointer underflow and out-of-bounds memory access. Exploitation requires a local user to install or process a specially crafted treemagic file, which can lead to local denial of service or application instability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| 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 | 2.86.0-2ubuntu0.3 | USN-8017-1 |
| Ubuntu 24.04 LTS | glib2.0 | 2.80.0-6ubuntu3.8 | USN-8017-1 |
| Ubuntu 22.04 LTS | glib2.0 | 2.72.4-0ubuntu2.9 | USN-8017-1 |
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 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | glib2 | 2.78.6-150600.4.35.1 | SUSE-SU-2026:0373-1 |
| SLES 15 SP6 | glib2 | 2.78.6-150600.4.35.1 | SUSE-SU-2026:0373-1 |
| SLES 12 SP5 | glib2 | 2.48.2-12.58.1 | SUSE-SU-2026:0372-1 |
Show 7 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 SP6 | glib2 | 2.78.6-150600.4.35.1 | SUSE-SU-2026:0373-1 |
| 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 5.2 | glib2 | 2.62.6-150200.3.42.1 | SUSE-SU-2026:0355-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glib2 | 2.86.3-3.1 | openSUSE-SU-2026:10111-1 |
| openSUSE Leap 16.0 | glib2 +1 | 2.84.4-160000.2.1 | openSUSE-SU-2026:20150-1 |
| openSUSE Leap 15.6 | glib2 +1 | 2.78.6-150600.4.35.1 | SUSE-SU-2026:0373-1 |
Advisories 12
- WID-SEC-2026-0778 Dell Secure Connect Gateway Policy Manager: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- USN-8017-1 glib2.0 vulnerabilities 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-2026:10111-1 gio-branding-upstream-2.86.3-3.1 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-2026:20221-1 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-2026:0372-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0373-1 Security update for glib2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0355-1 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