Description
An issue was discovered in Liblouis 3.5.0. A invalid free in the compileRule function in compileTranslationTable.c allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact.
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 | 3.5.0-2 | — |
| Debian 13 | liblouis | 3.5.0-2 | — |
| Debian 12 | liblouis | 3.5.0-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | liblouis | 3.5.0-1ubuntu0.1 | USN-3669-1 |
| Ubuntu 16.04 LTS | liblouis | 2.6.4-2ubuntu0.2 | USN-3669-1 |
| Ubuntu 14.04 LTS | liblouis | 2.5.3-2ubuntu1.3 | USN-3669-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | liblouis | 3.3.0-4.5.1 | SUSE-SU-2019:0795-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | liblouis | 3.16.1-1.5 | openSUSE-SU-2024:10953-1 |
| openSUSE Leap 15.0 | liblouis | 3.3.0-lp150.3.3.1 | openSUSE-SU-2019:1160-1 |
Advisories 4
- USN-3669-1 liblouis vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:10953-1 liblouis-data-3.16.1-1.5 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1160-1 Security update for liblouis SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0795-1 Security update for liblouis SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1582024
- USN-3669-1 vendor-advisory
- 104324 vdb-entry
- https://docs.google.com/document/d/1Uw3D6ECXZr8S2cWOTY81kg6ivv0WpR4kQqxVpUSyGUA/edit?usp=sharing
- openSUSE-SU-2019:1160 vendor-advisory