libopenmpt and openmpt123 - libopenmpt security updates 0.8.2, 0.7.15, 0.6.24, 0.5.38, 0.4.50

The OpenMPT/libopenmpt project released the latest stable libopenmpt version:

libopenmpt 0.8.2 (2025-07-19)

[Sec] Possible out-of-bounds sample data read in a specific combination of reverse sample playback + offset past sample loop. (r23711).
[Bug] Fixed pre-C++20 undefined behaviour due to left-shifting negative integer values.
[New] Makefile now supports DragonFly BSD.
openmpt123: FLAC multithreaded encoding has been enabled for Windows builds (https://github.com/xiph/flac/pull/822/).
Since libopenmpt 0.8.0, swapping between samples on the rear channels could introduce a click on the front channels.
IT: Volume column slides no longer propagate their effect memory to the regular effect column volume slides.
FC: Allow files with a sequence size of 0 to load (fixes a broken copy of cult.smod).
ogg: Update to v1.3.6 (2025-06-16).

The changelog for older versions can be found at https://lib.openmpt.org/doc/changelog.html .

Source code download links:

Binary download links:

Development library download links:

Documentation download links:

The OpenMPT/libopenmpt project also released an update to the old libopenmpt 0.6 stable branch:

[Sec] Possible out-of-bounds sample data read in a specific combination of reverse sample playback + offset past sample loop. (r23712).
[Bug] Fixed pre-C++20 undefined behaviour due to left-shifting negative integer values.
ogg: Update to v1.3.6 (2025-06-16).

Source code download links:

Documentation and binary downloads can be found at the libopenmpt website at https://lib.openmpt.org/libopenmpt/.

The OpenMPT/libopenmpt project also released an update to the old libopenmpt 0.6 stable branch:

[Sec] Possible out-of-bounds sample data read in a specific combination of reverse sample playback + offset past sample loop. (r23713).
[Bug] Fixed pre-C++20 undefined behaviour due to left-shifting negative integer values.
ogg: Update to v1.3.6 (2025-06-16).

Source code download links:

Documentation and binary downloads can be found at the libopenmpt website at https://lib.openmpt.org/libopenmpt/.

The OpenMPT/libopenmpt project also released an update to the old libopenmpt 0.5 stable branch:

[Sec] Possible out-of-bounds sample data read in a specific combination of reverse sample playback + offset past sample loop. (r23714).
[Bug] Fixed pre-C++20 undefined behaviour due to left-shifting negative integer values.
ogg: Update to v1.3.6 (2025-06-16).

Source code download links:

Documentation and binary downloads can be found at the libopenmpt website at https://lib.openmpt.org/libopenmpt/.

The OpenMPT/libopenmpt project also released an update to the old libopenmpt 0.4 stable branch:

[Sec] Possible out-of-bounds sample data read in a specific combination of reverse sample playback + offset past sample loop. (r23715).
[Bug] Fixed pre-C++20 undefined behaviour due to left-shifting negative integer values.
ogg: Update to v1.3.6 (2025-06-16).

Source code download links:

Documentation and binary downloads can be found at the libopenmpt website at https://lib.openmpt.org/libopenmpt/.

The following libopenmpt and libopenmpt-modplug versions are currently supported with security fixes by the OpenMPT/libopenmpt project:

libopenmpt 0.8.2
- Current stable version.
- Receives security updates.
- Receives minor playback fixes.
libopenmpt 0.7.15
- Old stable version.
- Receives security updates.
- Receives trivial bug fixes.
libopenmpt 0.6.24
- Old stable version.
- Receives security updates.
- Receives trivial bug fixes.
libopenmpt 0.5.38
- Old stable version.
- Receives security updates.
- Receives trivial bug fixes.
libopenmpt 0.4.50
- Old stable version.
- Receives security updates.
- Receives trivial bug fixes.
libopenmpt 0.9 (SVN trunk)
- development
- security updates
- playback fixes
- new features
- new file formats
libopenmpt-modplug 0.8.9.0-openmpt1
- Receives security updates.
libopenmpt-modplug 0.8.8.5-openmpt1
- Receives security updates.

Please update to the newest versions.