Description
Buffer Overflow vulnerability found in Liblouis v.3.24.0 allows a remote attacker to cause a denial of service via the lou_logFile function at logginc.c endpoint.
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 | liblouis | 3.24.0-2 | — |
| Debian 13 | liblouis | 3.24.0-2 | — |
| Debian 12 | liblouis | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | liblouis | 3.20.0-2ubuntu0.2 | USN-5996-1 |
| Ubuntu 20.04 LTS | liblouis | 3.12.0-3ubuntu0.2 | USN-5996-1 |
| Ubuntu 18.04 LTS | liblouis | 3.5.0-1ubuntu0.5 | USN-5996-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | liblouis | 2.6.4-2ubuntu0.4+esm1 | USN-5996-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | liblouis +1 | 3.16.1-5.el9 | RHSA-2023:6385 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | liblouis +1 | 3.16.1-5.el9 | ALSA-2023:6385 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | liblouis | 3.16.1-5.el9 | RLSA-2023:6385 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | liblouis | 3.20.0-150400.3.8.1 | SUSE-SU-2023:1771-1 |
| SLES 15 SP3 | liblouis | 3.11.0-150200.3.8.1 | SUSE-SU-2023:1773-1 |
| SLES 15 SP2 | liblouis | 3.11.0-150200.3.8.1 | SUSE-SU-2023:1773-1 |
| SLES 15 SP1 | liblouis | 3.3.0-150000.4.13.1 | SUSE-SU-2023:1772-1 |
| SLES 12 SP5 | liblouis | 2.6.4-6.14.2 | SUSE-SU-2023:1824-1 |
| SLES 12 SP5 | python-louis | 2.6.4-6.14.3 | SUSE-SU-2023:1824-1 |
| SLES 12 SP5 | python3-louis | 2.6.4-6.16.1 | SUSE-SU-2023:1824-1 |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | liblouis | 2.6.4-6.14.2 | SUSE-SU-2023:1824-1 |
| SLES 12 SP4 | python-louis | 2.6.4-6.14.3 | SUSE-SU-2023:1824-1 |
| SLES 12 SP4 | python3-louis | 2.6.4-6.16.1 | SUSE-SU-2023:1824-1 |
| SLES 12 SP2 | liblouis | 2.6.4-6.14.2 | SUSE-SU-2023:1824-1 |
| SLES 12 SP2 | python-louis | 2.6.4-6.14.3 | SUSE-SU-2023:1824-1 |
| SLES 12 SP2 | python3-louis | 2.6.4-6.16.1 | SUSE-SU-2023:1824-1 |
| SLES 12 | python3-louis | 2.6.4-6.16.1 | SUSE-SU-2023:1824-1 |
| SLES for SAP 15 SP3 | liblouis | 3.11.0-150200.3.8.1 | SUSE-SU-2023:1773-1 |
| SLES for SAP 15 SP2 | liblouis | 3.11.0-150200.3.8.1 | SUSE-SU-2023:1773-1 |
| SLES for SAP 15 SP1 | liblouis | 3.3.0-150000.4.13.1 | SUSE-SU-2023:1772-1 |
| SLES for SAP 12 SP5 | liblouis | 2.6.4-6.14.2 | SUSE-SU-2023:1824-1 |
| SLES for SAP 12 SP5 | python-louis | 2.6.4-6.14.3 | SUSE-SU-2023:1824-1 |
| SLES for SAP 12 SP5 | python3-louis | 2.6.4-6.16.1 | SUSE-SU-2023:1824-1 |
| SLES for SAP 12 SP4 | liblouis | 2.6.4-6.14.2 | SUSE-SU-2023:1824-1 |
| SLES for SAP 12 SP4 | python-louis | 2.6.4-6.14.3 | SUSE-SU-2023:1824-1 |
| SLES for SAP 12 SP4 | python3-louis | 2.6.4-6.16.1 | SUSE-SU-2023:1824-1 |
| SLE Real Time 15 SP3 | liblouis | 3.11.0-150200.3.8.1 | SUSE-SU-2023:1773-1 |
| SLE HPC 15 SP3 | liblouis | 3.11.0-150200.3.8.1 | SUSE-SU-2023:1773-1 |
| SLE HPC 15 SP2 | liblouis | 3.11.0-150200.3.8.1 | SUSE-SU-2023:1773-1 |
| SLE HPC 15 SP1 | liblouis | 3.3.0-150000.4.13.1 | SUSE-SU-2023:1772-1 |
| SUSE OpenStack Cloud Crowbar 9 | liblouis | 2.6.4-6.14.2 | SUSE-SU-2023:1824-1 |
| SUSE OpenStack Cloud Crowbar 9 | python-louis | 2.6.4-6.14.3 | SUSE-SU-2023:1824-1 |
| SUSE OpenStack Cloud Crowbar 9 | python3-louis | 2.6.4-6.16.1 | SUSE-SU-2023:1824-1 |
| SUSE OpenStack Cloud 9 | liblouis | 2.6.4-6.14.2 | SUSE-SU-2023:1824-1 |
| SUSE OpenStack Cloud 9 | python-louis | 2.6.4-6.14.3 | SUSE-SU-2023:1824-1 |
| SUSE OpenStack Cloud 9 | python3-louis | 2.6.4-6.16.1 | SUSE-SU-2023:1824-1 |
| SUSE Enterprise Storage 7.1 | liblouis | 3.11.0-150200.3.8.1 | SUSE-SU-2023:1773-1 |
| SUSE Enterprise Storage 7 | liblouis | 3.11.0-150200.3.8.1 | SUSE-SU-2023:1773-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | liblouis | 3.25.0-1.1 | openSUSE-SU-2024:12815-1 |
| openSUSE Leap 15.4 | liblouis | 3.3.0-150000.4.13.1 | SUSE-SU-2023:1773-1, SUSE-SU-2023:1772-1, SUSE-SU-2023:1771-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | liblouis +5 | 2.6.2-21.amzn2.0.2 | ALAS2-2023-2013 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | liblouis | 3.26.0-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | liblouis +1 | 3.16.1-5.el9 | ELSA-2023-6385 |
Advisories 13
- WID-SEC-2023-2853 Red Hat Enterprise Linux: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 8, 2026
- ALSA-2023:6385 Moderate: liblouis security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2023-2031 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- RHSA-2023:6385 Red Hat Security Advisory: liblouis security update Red Hat Security Advisories (RHSA) · Jul 5, 2026
- RLSA-2023:6385 Moderate: liblouis security update Rocky Linux Security Advisories · Jul 5, 2026
- USN-5996-1 liblouis vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- SUSE-SU-2023:1824-1 Security update for liblouis SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1773-1 Security update for liblouis SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1772-1 Security update for liblouis SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1771-1 Security update for liblouis SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12815-1 liblouis-data-3.25.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2023-6385 Moderate: liblouis security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 11, 2023
- ALAS2-2023-2013 Important: liblouis security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 20, 2023