Medium severity6.3NVD Advisory· Published Oct 14, 2026
CVE-2026-110602
CVE-2026-110602
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.
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Affected products
2- Range: <=0.11alpha
Patches
Vulnerability mechanics
References
4- github.com/kyz/libmspack/blob/v0.11alpha/libmspack/mspack/kwajd.cnvd
- github.com/kyz/libmspack/commit/4d868504114346aa767d435fbb89a8b76603493fnvd
- hackmd.io/@haind-pwn/libmspack-kwaj-uninitialized-freenvd
- www.vulncheck.com/advisories/libmspack-through-0-11alpha-uninitialized-pointer-free-via-kwajd-open-error-pathnvd
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