[SECURITY] [DLA 4805-1] mkvtoolnix security update
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Debian LTS Advisory DLA-4805-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Thorsten Alteholz
September 30, 2026 https://wiki.debian.org/LTS
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Package : mkvtoolnix
Version : 74.0.0-1+deb12u1
CVE ID : CVE-2026-90783
An issue has been found in mkvtoolnix, a set of command-line tools to work
with Matroska files. The issue is related to a heap buffer overflow in
the bundled avilib.
The only way to avoid this issue is to update the software.
For Debian 12 bookworm, this problem has been fixed in version
74.0.0-1+deb12u1.
We recommend that you upgrade your mkvtoolnix packages.
For the detailed security status of mkvtoolnix please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/mkvtoolnix
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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