A Libqb security update has been released for Ubuntu Linux 22.04 LTS and 23.04.

[USN-6308-1] Libqb vulnerability

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Ubuntu Security Notice USN-6308-1
August 28, 2023

libqb vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.04
- Ubuntu 22.04 LTS

Summary:

Libqb could be made to crash or execute arbitrary code if it
received a specially crafted message.

Software Description:
- libqb: generate man pages from Doxygen XML files

Details:

It was discovered that Libqb incorrectly handled certain messages.
An attacker could possibly use this issue to cause a crash or execute
arbitrary code.

Update instructions:

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

Ubuntu 23.04:
doxygen2man 2.0.6-2ubuntu0.1
libqb-tools 2.0.6-2ubuntu0.1
libqb100 2.0.6-2ubuntu0.1

Ubuntu 22.04 LTS:
doxygen2man 2.0.4-1ubuntu0.2
libqb-tools 2.0.4-1ubuntu0.2
libqb100 2.0.4-1ubuntu0.2

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

References:
https://ubuntu.com/security/notices/USN-6308-1
CVE-2023-39976

Package Information:
https://launchpad.net/ubuntu/+source/libqb/2.0.6-2ubuntu0.1
https://launchpad.net/ubuntu/+source/libqb/2.0.4-1ubuntu0.2