Medium
mruby — security advisory
A vulnerability has been found in mruby up to 3.4.0. This vulnerability affects the function sort_cmp of the file src/array.c. Such manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is eb398971bfb43c38db3e04528b68ac9a7ce509bc. It is advisable to implement a patch to correct this issue.
- Products
- mruby
- Affected versions
- 1.1.0+20150817+gita1731254-1, 1.1.0+20150906+git1cbbb7e1-1, 1.2.0+20160315+git4f20d58a-1, 1.3.0+20170925+git38185028-1, 1.3.0+20171029+git77edafb0-1, 1.3.0-1, 1.4.0-1, 2.0.0-1, 2.1.2-3, 3.0.0-1, 3.0.0-3, 3.2.0-1, 3.2.0-2, 3.3.0-1, 3.4.0-2, 3.4.0-3, 4.0.0-1
- Fixed versions
- Not specified
- CVEs
- CVE-2025-13120
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:24 UTC · Revision 1
Source evidence
A vulnerability has been found in mruby up to 3.4.0. This vulnerability affects the function sort_cmp of the file src/array.c. Such manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is eb398971bfb43c38db3e04528b68ac9a7ce509bc. It is advisable to implement a patch to correct this issue.
osv:UBUNTU-CVE-2025-13120
mruby
Fixed versions: Not specified
mruby
Fixed versions: Not specified
mruby
Fixed versions: Not specified
mruby
Fixed versions: Not specified
mruby
Fixed versions: Not specified
mruby
Fixed versions: Not specified
mruby
Fixed versions: Not specified
mruby
Fixed versions: Not specified
Complete source record
{
"id": "be8ba8aeb05175040a81b9a160f448f30a3c2707b0adfaf4cc38ac25f7712991",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-13120",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-13120",
"summary": "A vulnerability has been found in mruby up to 3.4.0. This vulnerability affects the function sort_cmp of the file src/array.c. Such manipulation leads to use after free. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is eb398971bfb43c38db3e04528b68ac9a7ce509bc. It is advisable to implement a patch to correct this issue.",
"evidence": "osv:UBUNTU-CVE-2025-13120",
"products": [
{
"name": {
"value": "mruby",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.1.0+20150817+gita1731254-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.1.0+20150906+git1cbbb7e1-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.2.0+20160315+git4f20d58a-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "mruby",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.3.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.0+20170925+git38185028-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.3.0+20171029+git77edafb0-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.4.0-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "mruby",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.0-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "mruby",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.1.2-3",
"evidence": "/affected/3/versions"
},
{
"value": "3.0.0-1",
"evidence": "/affected/3/versions"
},
{
"value": "3.0.0-3",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "mruby",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.2.0-1",
"evidence": "/affected/4/versions"
},
{
"value": "3.2.0-2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "mruby",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.3.0-1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "mruby",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.4.0-2",
"evidence": "/affected/6/versions"
},
{
"value": "3.4.0-3",
"evidence": "/affected/6/versions"
},
{
"value": "4.0.0-1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "mruby",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.3.0-1",
"evidence": "/affected/7/versions"
},
{
"value": "3.4.0-2",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2025-13120",
"aliases": [
"UBUNTU-CVE-2025-13120"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mruby",
"purl": "pkg:deb/ubuntu/mruby?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"1.1.0+20150817+gita1731254-1",
"1.1.0+20150906+git1cbbb7e1-1",
"1.2.0+20160315+git4f20d58a-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-13120.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mruby",
"binary_version": "1.2.0+20160315+git4f20d58a-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mruby",
"purl": "pkg:deb/ubuntu/mruby?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1.3.0-1",
"1.3.0+20170925+git38185028-1",
"1.3.0+20171029+git77edafb0-1",
"1.4.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-13120.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mruby",
"binary_version": "1.4.0-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mruby",
"purl": "pkg:deb/ubuntu/mruby?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"2.0.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-13120.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mruby",
"binary_version": "2.0.0-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mruby",
"purl": "pkg:deb/ubuntu/mruby?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"2.1.2-3",
"3.0.0-1",
"3.0.0-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-13120.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mruby",
"binary_version": "3.0.0-3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mruby",
"purl": "pkg:deb/ubuntu/mruby?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"3.2.0-1",
"3.2.0-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-13120.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mruby",
"binary_version": "3.2.0-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mruby",
"purl": "pkg:deb/ubuntu/mruby?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"3.3.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-13120.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mruby",
"binary_version": "3.3.0-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mruby",
"purl": "pkg:deb/ubuntu/mruby?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"3.4.0-2",
"3.4.0-3",
"4.0.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-13120.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mruby",
"binary_version": "4.0.0-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mruby",
"purl": "pkg:deb/ubuntu/mruby?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"3.3.0-1",
"3.4.0-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-13120.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "mruby",
"binary_version": "3.4.0-2"
}
]
}
}
],
"modified": "2026-10-17T12:56:48.026577397Z",
"provider": "osv",
"upstream": [
"CVE-2025-13120"
],
"references": [
"https://ubuntu.com/security/CVE-2025-13120",
"https://www.cve.org/CVERecord?id=CVE-2025-13120",
"https://github.com/mruby/mruby/issues/6649",
"https://github.com/makesoftwaresafe/mruby/pull/263",
"https://github.com/mruby/mruby/issues/6649#issue-3534393003",
"https://vuldb.com/?ctiid.332325",
"https://vuldb.com/?id.332325",
"https://vuldb.com/?submit.683435"
]
},
"related_cves": [
{
"value": "CVE-2025-13120",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 356299,
"published_at": "2025-11-13T16:15:00+00:00"
}