This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-90783 →

DEBIAN-CVE-2026-90783

MKVToolNix through 101.0 contains a heap buffer overflow in the bundled avilib library's ODML superindex parser due to integer wraparound in 32-bit ar...

Original description

The description as published by the source.

MKVToolNix through 101.0 contains a heap buffer overflow in the bundled avilib library's ODML superindex parser due to integer wraparound in 32-bit arithmetic. Attackers can craft a malicious AVI file with oversized entry counts that cause an undersized heap allocation, allowing a heap buffer overflow when the file is parsed with mkvmerge.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 mkvtoolnix

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"74.0.0-1+deb12u1"}]}]

Debian:13 mkvtoolnix

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"92.0-1+deb13u1"}]}]

Debian:14 mkvtoolnix

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"101.0-2"}]}]

References

advisory security-tracker.debian.org