A Liblouis security update has been released for Ubuntu Linux 16.04 ESM, 18.04 LTS, 20.04 LTS, 22.04 LTS, and 22.10.

USN-5996-1: Liblouis vulnerabilities

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Ubuntu Security Notice USN-5996-1
April 04, 2023

liblouis vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM

Summary:

Several security issues were fixed in liblouis.

Software Description:
- liblouis: Braille translation library - utilities

Details:

It was discovered that Liblouis incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2023-26767, CVE-2023-26768, CVE-2023-26769)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.10:
liblouis-bin 3.22.0-2ubuntu0.1
liblouis20 3.22.0-2ubuntu0.1

Ubuntu 22.04 LTS:
liblouis-bin 3.20.0-2ubuntu0.2
liblouis20 3.20.0-2ubuntu0.2

Ubuntu 20.04 LTS:
liblouis-bin 3.12.0-3ubuntu0.2
liblouis20 3.12.0-3ubuntu0.2

Ubuntu 18.04 LTS:
liblouis-bin 3.5.0-1ubuntu0.5
python-louis 3.5.0-1ubuntu0.5

Ubuntu 16.04 ESM:
liblouis-bin 2.6.4-2ubuntu0.4+esm1
liblouis9 2.6.4-2ubuntu0.4+esm1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-5996-1
CVE-2023-26767, CVE-2023-26768, CVE-2023-26769

Package Information:
https://launchpad.net/ubuntu/+source/liblouis/3.22.0-2ubuntu0.1
https://launchpad.net/ubuntu/+source/liblouis/3.20.0-2ubuntu0.2
https://launchpad.net/ubuntu/+source/liblouis/3.12.0-3ubuntu0.2
https://launchpad.net/ubuntu/+source/liblouis/3.5.0-1ubuntu0.5