CVE-2020-36401

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Source
https://nvd.nist.gov/vuln/detail/CVE-2020-36401
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-36401.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-36401
Downstream
Published
2021-07-01T03:15:07.820Z
Modified
2025-11-14T11:00:17.820656Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

mruby 2.1.2 has a double free in mrbdefaultallocf (called from mrbfree and objfree).

References

Affected packages

Git / github.com/mruby/mruby

Affected ranges

Type
GIT
Repo
https://github.com/mruby/mruby
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
97319697c8f9f6ff27b32589947e1918e3015503

Affected versions

1.*

1.0.0
1.1.0
1.2.0
1.3.0
1.4.0
1.4.1

2.*

2.0.0
2.0.1
2.1.0
2.1.0-rc
2.1.1
2.1.1-rc
2.1.1-rc2

Database specific

vanir_signatures

[
    {
        "deprecated": false,
        "id": "CVE-2020-36401-0cef8eb3",
        "signature_version": "v1",
        "signature_type": "Line",
        "source": "https://github.com/mruby/mruby/commit/97319697c8f9f6ff27b32589947e1918e3015503",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "291664367464202302924807726550456561833",
                "283430232777236476392833576910594740772",
                "916156461856379022783379629891076070"
            ]
        },
        "target": {
            "file": "src/gc.c"
        }
    },
    {
        "deprecated": false,
        "id": "CVE-2020-36401-f28469e6",
        "signature_version": "v1",
        "signature_type": "Function",
        "source": "https://github.com/mruby/mruby/commit/97319697c8f9f6ff27b32589947e1918e3015503",
        "digest": {
            "length": 326.0,
            "function_hash": "73814944348713604547654280989925281376"
        },
        "target": {
            "function": "mrb_realloc",
            "file": "src/gc.c"
        }
    }
]