CVE-2026-4438
glibcVulnerabilityCVSS 5.4PatchedPoC
A public proof-of-concept or exploit code is available, raising the risk of active exploitation. A fixed version is available (see the table below).
Recommended action: Update to the fixed version listed for your distribution using the native package manager.
Severity metrics
CVSS 3.1 : 5.4 MEDIUM
Attack vectorAdjacent network
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
Confidentiality impactLow
Integrity impactLow
Availability impactNone
Vector: AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
| Distribution | Package | Affected | Fixed version | Status |
|---|---|---|---|---|
| Debian:12 | glibc | - | 2.36-9+deb12u14 | fixed |
| Debian:13 | glibc | - | 2.41-12+deb13u3 | fixed |
| Debian:14 | glibc | - | 2.42-14 | fixed |
| Ubuntu:24.04:LTS | glibc | - | - | affected (no fix yet) |
| Ubuntu:25.10 | glibc | - | - | affected (no fix yet) |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | glibc | - | 2.38-150600.14.46.1 | fixed |
| SUSE:Linux Enterprise Module for Development Tools 15 SP7 | glibc | - | 2.38-150600.14.46.1 | fixed |
| SUSE:Linux Enterprise Server 15 SP6-LTSS | glibc | - | 2.38-150600.14.46.1 | fixed |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | glibc | - | 2.38-150600.14.46.1 | fixed |
| openSUSE:Leap 15.6 | glibc | - | 2.38-150600.14.46.1 | fixed |
| SUSE:Linux Micro Extras 6.2 | glibc | - | 2.40-160000.4.1 | fixed |
| SUSE:Linux Micro 6.2 | glibc | - | 2.40-160000.4.1 | fixed |
| SUSE:Linux Micro 6.1 | glibc | - | 2.38-slfo.1.1_7.1 | fixed |
| SUSE:Linux Micro 6.0 | glibc | - | 2.38-12.1 | fixed |
| SUSE:Linux Enterprise Server 16.0 | glibc | - | 2.40-160000.4.1 | fixed |
| SUSE:Linux Enterprise Server for SAP applications 16.0 | glibc | - | 2.40-160000.4.1 | fixed |
| openSUSE:Tumbleweed | glibc | - | 2.43-1.1 | fixed |
| openSUSE:Leap 16.0 | glibc | - | 2.40-160000.4.1 | fixed |
| Red Hat:enterprise_linux:10.2 | glibc | - | 0:2.39-121.el10_2 | fixed |
| Red Hat:enterprise_linux:9::baseos | glibc | - | 0:2.34-270.el9_8 | fixed |
| Red Hat:hummingbird:1 | glibc | - | 0:2.42-11.1.hum1 | fixed |