ubuntu-cve-2025-50951
Vulnerability from osv_ubuntu
Published
2025-10-23 16:16
Modified
2026-05-20 15:22
Summary
Details
FontForge v20230101 was discovered to contain a memory leak via the utf7toutf8_copy function at /fontforge/sfd.c.
Severity
6.5 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fontforge",
"binary_version": "20120731.b-7.1ubuntu0.1+esm1"
},
{
"binary_name": "fontforge-common",
"binary_version": "20120731.b-7.1ubuntu0.1+esm1"
},
{
"binary_name": "fontforge-nox",
"binary_version": "20120731.b-7.1ubuntu0.1+esm1"
},
{
"binary_name": "libfontforge1",
"binary_version": "20120731.b-7.1ubuntu0.1+esm1"
},
{
"binary_name": "libgdraw4",
"binary_version": "20120731.b-7.1ubuntu0.1+esm1"
},
{
"binary_name": "python-fontforge",
"binary_version": "20120731.b-7.1ubuntu0.1+esm1"
}
],
"priority_reason": "Small memory leak issue"
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "fontforge",
"purl": "pkg:deb/ubuntu/fontforge@20120731.b-7.1ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"20120731.b-5",
"20120731.b-5ubuntu1",
"20120731.b-7.1",
"20120731.b-7.1ubuntu0.1",
"20120731.b-7.1ubuntu0.1+esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fontforge",
"binary_version": "1:20170731~dfsg-1ubuntu0.1~esm1"
},
{
"binary_name": "fontforge-common",
"binary_version": "1:20170731~dfsg-1ubuntu0.1~esm1"
},
{
"binary_name": "fontforge-nox",
"binary_version": "1:20170731~dfsg-1ubuntu0.1~esm1"
},
{
"binary_name": "libfontforge2",
"binary_version": "1:20170731~dfsg-1ubuntu0.1~esm1"
},
{
"binary_name": "libgdraw5",
"binary_version": "1:20170731~dfsg-1ubuntu0.1~esm1"
},
{
"binary_name": "python-fontforge",
"binary_version": "1:20170731~dfsg-1ubuntu0.1~esm1"
}
],
"priority_reason": "Small memory leak issue"
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "fontforge",
"purl": "pkg:deb/ubuntu/fontforge@1:20170731~dfsg-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:20161005~dfsg-4+deb9u1ubuntu1",
"1:20170731~dfsg-1",
"1:20170731~dfsg-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fontforge",
"binary_version": "1:20190801~dfsg-4ubuntu0.1"
},
{
"binary_name": "fontforge-common",
"binary_version": "1:20190801~dfsg-4ubuntu0.1"
},
{
"binary_name": "fontforge-extras",
"binary_version": "1:20190801~dfsg-4ubuntu0.1"
},
{
"binary_name": "fontforge-nox",
"binary_version": "1:20190801~dfsg-4ubuntu0.1"
},
{
"binary_name": "libfontforge3",
"binary_version": "1:20190801~dfsg-4ubuntu0.1"
},
{
"binary_name": "libgdraw6",
"binary_version": "1:20190801~dfsg-4ubuntu0.1"
},
{
"binary_name": "python3-fontforge",
"binary_version": "1:20190801~dfsg-4ubuntu0.1"
}
],
"priority_reason": "Small memory leak issue"
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "fontforge",
"purl": "pkg:deb/ubuntu/fontforge@1:20190801~dfsg-4ubuntu0.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:20170731~dfsg-1build1",
"1:20170731~dfsg-2",
"1:20190801~dfsg-2",
"1:20190801~dfsg-2ubuntu1",
"1:20190801~dfsg-4",
"1:20190801~dfsg-4ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fontforge",
"binary_version": "1:20201107~dfsg-4+deb11u1build0.22.04.1"
},
{
"binary_name": "fontforge-common",
"binary_version": "1:20201107~dfsg-4+deb11u1build0.22.04.1"
},
{
"binary_name": "fontforge-extras",
"binary_version": "1:20201107~dfsg-4+deb11u1build0.22.04.1"
},
{
"binary_name": "fontforge-nox",
"binary_version": "1:20201107~dfsg-4+deb11u1build0.22.04.1"
},
{
"binary_name": "libfontforge4",
"binary_version": "1:20201107~dfsg-4+deb11u1build0.22.04.1"
},
{
"binary_name": "python3-fontforge",
"binary_version": "1:20201107~dfsg-4+deb11u1build0.22.04.1"
}
],
"priority_reason": "Small memory leak issue"
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "fontforge",
"purl": "pkg:deb/ubuntu/fontforge@1:20201107~dfsg-4+deb11u1build0.22.04.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:20201107~dfsg-4",
"1:20201107~dfsg-4build1",
"1:20201107~dfsg-4+deb11u1build0.22.04.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fontforge",
"binary_version": "1:20230101~dfsg-1.1build1"
},
{
"binary_name": "fontforge-common",
"binary_version": "1:20230101~dfsg-1.1build1"
},
{
"binary_name": "fontforge-extras",
"binary_version": "1:20230101~dfsg-1.1build1"
},
{
"binary_name": "fontforge-nox",
"binary_version": "1:20230101~dfsg-1.1build1"
},
{
"binary_name": "libfontforge4",
"binary_version": "1:20230101~dfsg-1.1build1"
},
{
"binary_name": "python3-fontforge",
"binary_version": "1:20230101~dfsg-1.1build1"
}
],
"priority_reason": "Small memory leak issue"
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "fontforge",
"purl": "pkg:deb/ubuntu/fontforge@1:20230101~dfsg-1.1build1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:20230101~dfsg-1build1",
"1:20230101~dfsg-1build2",
"1:20230101~dfsg-1.1",
"1:20230101~dfsg-1.1build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fontforge",
"binary_version": "1:20230101~dfsg-8"
},
{
"binary_name": "fontforge-common",
"binary_version": "1:20230101~dfsg-8"
},
{
"binary_name": "fontforge-extras",
"binary_version": "1:20230101~dfsg-8"
},
{
"binary_name": "fontforge-nox",
"binary_version": "1:20230101~dfsg-8"
},
{
"binary_name": "libfontforge4",
"binary_version": "1:20230101~dfsg-8"
},
{
"binary_name": "python3-fontforge",
"binary_version": "1:20230101~dfsg-8"
}
],
"priority_reason": "Small memory leak issue"
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "fontforge",
"purl": "pkg:deb/ubuntu/fontforge@1:20230101~dfsg-8?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:20230101~dfsg-4build1",
"1:20230101~dfsg-4build2",
"1:20230101~dfsg-7",
"1:20230101~dfsg-8"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fontforge",
"binary_version": "1:20230101~dfsg-8build1"
},
{
"binary_name": "fontforge-common",
"binary_version": "1:20230101~dfsg-8build1"
},
{
"binary_name": "fontforge-extras",
"binary_version": "1:20230101~dfsg-8build1"
},
{
"binary_name": "fontforge-nox",
"binary_version": "1:20230101~dfsg-8build1"
},
{
"binary_name": "libfontforge4",
"binary_version": "1:20230101~dfsg-8build1"
},
{
"binary_name": "python3-fontforge",
"binary_version": "1:20230101~dfsg-8build1"
}
],
"priority_reason": "Small memory leak issue"
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "fontforge",
"purl": "pkg:deb/ubuntu/fontforge@1:20230101~dfsg-8build1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:20230101~dfsg-8",
"1:20230101~dfsg-8build1"
]
}
],
"aliases": [],
"details": "FontForge v20230101 was discovered to contain a memory leak via the utf7toutf8_copy function at /fontforge/sfd.c.",
"id": "UBUNTU-CVE-2025-50951",
"modified": "2026-05-20T15:22:54Z",
"published": "2025-10-23T16:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-50951"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-50951"
},
{
"type": "REPORT",
"url": "https://github.com/fontforge/fontforge/pull/5495"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-50951"
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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