Description
libmspack 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.
Metrics
CVSS 3.1 6.3/10
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:HWeakness enumeration
Affected software
No affected versions have been published.
Timeline
- Published
- Oct 14, 2026
- Last modified
- Oct 16, 2026
- NVD status
- Deferred