CVE-2026-110602

NameCVE-2026-110602
Descriptionlibmspack through 0.11alpha contains an uninitialized pointer free vulnerability in kwajd_open() in mspack/kwajd.c that frees unzeroed filename and extra pointers on header read errors. Attackers can supply a truncated, empty, or wrong-signature KWAJ file to crash the process or obtain an arbitrary-free memory corruption primitive.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1151083

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libmspack (PTS)bookworm0.11-1vulnerable
trixie0.11-1.1vulnerable
forky, sid0.11-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libmspacksource(unstable)0.11-21151083

Notes

https://github.com/kyz/libmspack/commit/4d868504114346aa767d435fbb89a8b76603493f

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