{"id":"CVE-2026-110602","revision":"b1971c2daef84581b29ebcd017178ddb","records":[{"revision":"b1971c2daef84581b29ebcd017178ddb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-110602","aliases":[],"title":"libmspack through 0.11alpha Uninitialized Pointer Free via kwajd_open Error Path","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.","state":0,"publishedAt":"2026-10-14T14:16:43.661+00:00","modifiedAt":"2026-10-14T18:01:09.032+00:00","affected":[{"ecosystem":"https://github.com","name":"libmspack","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"kyz\",\n                    \"product\": \"libmspack\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"0.11alpha\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/kyz/libmspack\",\n                    \"collectionURL\": \"https://github.com\",\n                    \"repo\": \"https://github.com/kyz/libmspack\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":5.8,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H","score":6.3,"severity":"MEDIUM"}],"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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-110602","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-110602","identifiers":["CVE-2026-110602"]},"retained":false,"historicalAffected":[]}],"coverage":[]}