CVE-2019-6706

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Source
https://cve.org/CVERecord?id=CVE-2019-6706
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-6706.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2019-6706
Downstream
Related
Published
2019-01-23T19:29:00.447Z
Modified
2026-07-08T20:57:32.268098Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Lua 5.3.5 has a use-after-free in lua_upvaluejoin in lapi.c. For example, a crash outcome might be achieved by an attacker who is able to trigger a debug.upvaluejoin call in which the arguments have certain relationships.

Database specific 
{
    "unresolved_ranges": [
        {
            "cpes": [
                "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "16.04"
                },
                {
                    "last_affected": "16.04"
                },
                {
                    "introduced": "18.04"
                },
                {
                    "last_affected": "18.04"
                },
                {
                    "introduced": "18.10"
                },
                {
                    "last_affected": "18.10"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "canonical:ubuntu_linux"
        }
    ]
}
References

Affected packages

Git / github.com/lua/lua

Affected ranges

Type
GIT
Repo
https://github.com/lua/lua
Events
Introduced
063d4e4543088e7a21965bda8ee5a0f952a9029e
Last affected
063d4e4543088e7a21965bda8ee5a0f952a9029e
Fixed
89aee84cbc9224f638f3b7951b306d2ee8ecb71e
Database specific 
{
    "cpe": "cpe:2.3:a:lua:lua:5.3.5:*:*:*:*:*:*:*",
    "source": [
        "CPE_STRING",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "5.3.5"
        },
        {
            "last_affected": "5.3.5"
        }
    ]
}

Affected versions

5.*
5.3.5
v5.*
v5.3.5

Database specific

vanir_signatures 
[
    {
        "source": "https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e",
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "function_hash": "45231132265163223636532311818292060392",
            "length": 408.0
        },
        "id": "CVE-2019-6706-00032def",
        "signature_type": "Function",
        "target": {
            "function": "getupvalref",
            "file": "lapi.c"
        }
    },
    {
        "source": "https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e",
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "function_hash": "168654682806415888564868502854858233475",
            "length": 468.0
        },
        "id": "CVE-2019-6706-264b1e53",
        "signature_type": "Function",
        "target": {
            "function": "lua_upvalueid",
            "file": "lapi.c"
        }
    },
    {
        "source": "https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e",
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "function_hash": "336886739732523367635662810366732805781",
            "length": 392.0
        },
        "id": "CVE-2019-6706-ad2906b9",
        "signature_type": "Function",
        "target": {
            "function": "lua_upvaluejoin",
            "file": "lapi.c"
        }
    },
    {
        "source": "https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e",
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "114280754343182667492310544413047257523",
                "135797660772714151558304634952356559189",
                "324426448145863171687706490342891370242",
                "158464887736040735811625781411603539517",
                "109284068507191940525491597714252165763",
                "17353900652863108361291584574332551664",
                "73243341667893678318317837601477420919",
                "184943886777344493192408412618803260479",
                "92936929984927184471054474271540256660",
                "315317082330350668532734840438847734449",
                "232247388784538711332203219499193690964",
                "238016185841859018970600644226169544163",
                "212682399206584147756393191489144751679",
                "265234325060766264020411529438170302368",
                "316472907546906173177633520659052112636",
                "211225411100249201500195271735977703457",
                "105626001136622936431389132883094094572",
                "215722041084154120534485317323045511353",
                "69590894200313878133321429160581940638",
                "104367335793266688094676634691058216743"
            ]
        },
        "id": "CVE-2019-6706-e7916afb",
        "signature_type": "Line",
        "target": {
            "file": "lapi.c"
        }
    }
]
vanir_signatures_modified 
"2026-07-08T20:57:32Z"
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-6706.json"