ubuntu-cve-2026-40227
Vulnerability from osv_ubuntu
Published
2026-04-10 16:16
Modified
2026-05-20 15:27
Summary
Details
In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call with an array or map that has a null element.
Severity
6.2 (Medium)
5.5 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
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{
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{
"binary_name": "systemd-journal-remote",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "systemd-oomd",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "systemd-repart",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "systemd-resolved",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "systemd-standalone-shutdown",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "systemd-standalone-sysusers",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "systemd-standalone-tmpfiles",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "systemd-sysv",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "systemd-tests",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "systemd-timesyncd",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "systemd-ukify",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "systemd-userdbd",
"binary_version": "257.9-0ubuntu2.4"
},
{
"binary_name": "udev",
"binary_version": "257.9-0ubuntu2.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "systemd",
"purl": "pkg:deb/ubuntu/systemd@257.9-0ubuntu2.4?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"257.4-1ubuntu3",
"257.6-1ubuntu1",
"257.7-1ubuntu1",
"257.7-1ubuntu3",
"257.8-0ubuntu2",
"257.9-0ubuntu1",
"257.9-0ubuntu2",
"257.9-0ubuntu2.1",
"257.9-0ubuntu2.3",
"257.9-0ubuntu2.4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libnss-myhostname",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "libnss-mymachines",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "libnss-resolve",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "libnss-systemd",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "libpam-systemd",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "libsystemd-shared",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "libsystemd0",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "libudev1",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-boot",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-boot-efi",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-boot-tools",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-container",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-coredump",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-cryptsetup",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-homed",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-journal-remote",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-oomd",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-repart",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-resolved",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-standalone-shutdown",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-standalone-sysusers",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-standalone-tmpfiles",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-sysv",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-tests",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-timesyncd",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-ukify",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "systemd-userdbd",
"binary_version": "259.5-0ubuntu3"
},
{
"binary_name": "udev",
"binary_version": "259.5-0ubuntu3"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "systemd",
"purl": "pkg:deb/ubuntu/systemd@259.5-0ubuntu3?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"257.9-0ubuntu2",
"259-1ubuntu2",
"259-1ubuntu3",
"259.3-0ubuntu1",
"259.5-0ubuntu1",
"259.5-0ubuntu2",
"259.5-0ubuntu3"
]
}
],
"aliases": [],
"details": "In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call with an array or map that has a null element.",
"id": "UBUNTU-CVE-2026-40227",
"modified": "2026-05-20T15:27:26Z",
"published": "2026-04-10T16:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-40227"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-40227"
},
{
"type": "REPORT",
"url": "https://github.com/systemd/systemd/security/advisories/GHSA-848h-497j-8vjq"
}
],
"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:H",
"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_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-40227"
],
"withdrawn": "2026-06-05T17:45:53Z"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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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