CVEvulnerability
CVE-2026-110602
5.8 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-10-14
- Last modified
- 2026-10-16
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 5.8 MEDIUM — CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 6.3 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H
- Weaknesses
- CWE-824
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.
Related
Weakness · CWE (1)
- CWE-824 Access of Uninitialized Pointer weakness
References
- https://github.com/kyz/libmspack/blob/v0.11alpha/libmspack/mspack/kwajd.c#L111-L181 github.com
- https://github.com/kyz/libmspack/commit/4d868504114346aa767d435fbb89a8b76603493f github.com
- https://hackmd.io/@haind-pwn/libmspack-kwaj-uninitialized-free hackmd.io
- https://www.vulncheck.com/advisories/libmspack-through-0-11alpha-uninitialized-pointer-free-via-kwajd-open-error-path www.vulncheck.com
- https://hackmd.io/@haind-pwn/libmspack-kwaj-uninitialized-free hackmd.io