CVE-2026-110602

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Source
https://cve.org/CVERecord?id=CVE-2026-110602
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110602.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-110602
Downstream
AZL (2)
BELL (1)
DEBIAN (1)
ECHO (1)
UBUNTU (1)
Published
2026-10-14T14:16:43Z
Modified
2026-10-28T11:06:33Z
Severity
  • 5.8 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
libmspack through 0.11alpha Uninitialized Pointer Free via kwajd_open Error Path
Details

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.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-824"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110602.json"
}
References

Affected packages

Git / github.com/kyz/libmspack

Affected ranges

Type
GIT
Repo
https://github.com/kyz/libmspack
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
4d868504114346aa767d435fbb89a8b76603493f
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "last_affected": "0.11alpha"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "fixed": "4d868504114346aa767d435fbb89a8b76603493f"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

1.*
1.7
v0.*
v0.0.20060920alpha
v0.10.1alpha
v0.10alpha
v0.11alpha
v0.3alpha
v0.4alpha
v0.5alpha
v0.6alpha
v0.7.1alpha
v0.7alpha
v0.8alpha
v0.9.1alpha
v0.9alpha
v1.*
v1.0
v1.1
v1.10
v1.11
v1.2
v1.3
v1.4
v1.5
v1.8
v1.9
v1.9.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110602.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "48560851326778029412676564465937156685",
                "12789669256206063156805026028267745851",
                "185010483651671717142318414838607800814"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-110602-27779e6a",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/kyz/libmspack/commit/4d868504114346aa767d435fbb89a8b76603493f",
        "target": {
            "file": "libmspack/test/kwajd_test.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "5633788179670170631706243187240048611",
            "length": 2787
        },
        "id": "CVE-2026-110602-2923c71f",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/kyz/libmspack/commit/4d868504114346aa767d435fbb89a8b76603493f",
        "target": {
            "file": "libmspack/mspack/kwajd.c",
            "function": "kwajd_read_headers"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "117464034208455546816271606423021089203",
                "215420081861816109865548852732660633139",
                "130674777003633882465420521741492668372",
                "48983895528938902197334298322579142434",
                "196248921024075172767992439054918490554",
                "84361438120277015095951877407994165994",
                "42168279074547748087924018292048539463",
                "277183410381831466800663013845031544327"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-110602-5aaced24",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/kyz/libmspack/commit/4d868504114346aa767d435fbb89a8b76603493f",
        "target": {
            "file": "libmspack/mspack/kwajd.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "81560445160957140920540200524343069913",
            "length": 2818
        },
        "id": "CVE-2026-110602-82884835",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/kyz/libmspack/commit/4d868504114346aa767d435fbb89a8b76603493f",
        "target": {
            "file": "libmspack/test/kwajd_test.c",
            "function": "kwajd_open_test_01"
        }
    }
]
vanir_signatures_modified 
"2026-10-28T11:06:33Z"