ubuntu-cve-2026-30892
Vulnerability from osv_ubuntu
Published
2026-03-26 00:16
Modified
2026-05-20 15:26
Summary
Details
crun is an open source OCI Container Runtime fully written in C. In versions 1.19 through 1.26, the crun exec option -u (--user) is incorrectly parsed. The value 1 is interpreted as UID 0 and GID 0 when it should have been UID 1 and GID 0. The process thus runs with higher privileges than expected. Version 1.27 patches the issue.
Severity
0.0 (None)
7.8 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "crun",
"binary_version": "0.12.1+dfsg-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "crun",
"purl": "pkg:deb/ubuntu/crun@0.12.1+dfsg-1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.10.5+dfsg-1",
"0.10.6+dfsg-1",
"0.11+dfsg-1",
"0.12+dfsg-1",
"0.12.1+dfsg-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "crun",
"binary_version": "0.17+dfsg-1.1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "crun",
"purl": "pkg:deb/ubuntu/crun@0.17+dfsg-1.1ubuntu0.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.17+dfsg-1",
"0.17+dfsg-1.1",
"0.17+dfsg-1.1ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "crun",
"binary_version": "1.14.1-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "crun",
"purl": "pkg:deb/ubuntu/crun@1.14.1-1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.8.5-1",
"1.11-1",
"1.11.1-1",
"1.12-1",
"1.13-1",
"1.14-1",
"1.14.1-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "crun",
"binary_version": "1.21-1ubuntu2"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "crun",
"purl": "pkg:deb/ubuntu/crun@1.21-1ubuntu2?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.20-1syncable1",
"1.21-1ubuntu2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "crun",
"binary_version": "1.21-1ubuntu3"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "crun",
"purl": "pkg:deb/ubuntu/crun@1.21-1ubuntu3?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.21-1ubuntu2",
"1.21-1ubuntu3"
]
}
],
"aliases": [],
"details": "crun is an open source OCI Container Runtime fully written in C. In versions 1.19 through 1.26, the `crun exec` option `-u` (`--user`) is incorrectly parsed. The value `1` is interpreted as UID 0 and GID 0 when it should have been UID 1 and GID 0. The process thus runs with higher privileges than expected. Version 1.27 patches the issue.",
"id": "UBUNTU-CVE-2026-30892",
"modified": "2026-05-20T15:26:08Z",
"published": "2026-03-26T00:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-30892"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-30892"
},
{
"type": "REPORT",
"url": "https://github.com/containers/crun/commit/1bd7f42446999b0e76bc3d575392e05c943b0b01"
},
{
"type": "REPORT",
"url": "https://github.com/containers/crun/releases/tag/1.27"
},
{
"type": "REPORT",
"url": "https://github.com/containers/crun/security/advisories/GHSA-4vg2-xjqj-7chj"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-30892"
]
}
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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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