CVE-2026-110602 | BDVDB-2026-389504 Detail
kyzlibmspack
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.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact high. Attack vector: local.
Weaknesses#
- CWE-824 Access of Uninitialized Pointer
References#
- https://github.com/kyz/libmspack/commit/4d868504114346aa767d435fbb89a8b76603493f
- https://github.com/kyz/libmspack/blob/v0.11alpha/libmspack/mspack/kwajd.c#L111-L181
- https://hackmd.io/@haind-pwn/libmspack-kwaj-uninitialized-free
- https://www.vulncheck.com/advisories/libmspack-through-0-11alpha-uninitialized-pointer-free-via-kwajd-open-error-path
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.