ubuntu-cve-2025-6019
Vulnerability from osv_ubuntu
Published
2025-06-17 16:00
Modified
2026-04-22 07:53
Summary
Details
A Local Privilege Escalation (LPE) vulnerability was found in libblockdev. Generally, the "allow_active" setting in Polkit permits a physically present user to take certain actions based on the session type. Due to the way libblockdev interacts with the udisks daemon, an "allow_active" user on a system may be able escalate to full root privileges on the target host. Normally, udisks mounts user-provided filesystem images with security flags like nosuid and nodev to prevent privilege escalation. However, a local attacker can create a specially crafted XFS image containing a SUID-root shell, then trick udisks into resizing it. This mounts their malicious filesystem with root privileges, allowing them to execute their SUID-root shell and gain complete control of the system.
Severity
7.0 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "gir1.2-blockdev-2.0",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-btrfs2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-crypto2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-dm2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-fs2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-kbd2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-loop2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-lvm-dbus2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-lvm2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-mdraid2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-mpath2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-part-err2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-part2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-plugins-all",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-swap2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev-utils2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "libblockdev2",
"binary_version": "2.16-2ubuntu0.1~esm1"
},
{
"binary_name": "python3-blockdev",
"binary_version": "2.16-2ubuntu0.1~esm1"
}
],
"priority_reason": "Allows local privilege escalation"
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "libblockdev",
"purl": "pkg:deb/ubuntu/libblockdev@2.16-2ubuntu0.1~esm1?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.16-2ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.12-2",
"2.12-3",
"2.14-2",
"2.14-3",
"2.16-2"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "gir1.2-udisks-2.0",
"binary_version": "2.7.6-3ubuntu0.2+esm1"
},
{
"binary_name": "libudisks2-0",
"binary_version": "2.7.6-3ubuntu0.2+esm1"
},
{
"binary_name": "udisks2",
"binary_version": "2.7.6-3ubuntu0.2+esm1"
},
{
"binary_name": "udisks2-btrfs",
"binary_version": "2.7.6-3ubuntu0.2+esm1"
},
{
"binary_name": "udisks2-lvm2",
"binary_version": "2.7.6-3ubuntu0.2+esm1"
}
],
"priority_reason": "Allows local privilege escalation"
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "udisks2",
"purl": "pkg:deb/ubuntu/udisks2@2.7.6-3ubuntu0.2+esm1?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.7.6-3ubuntu0.2+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.6.5-2ubuntu2",
"2.6.5-2ubuntu3",
"2.7.6-2ubuntu4",
"2.7.6-2ubuntu6",
"2.7.6-3",
"2.7.6-3ubuntu0.1",
"2.7.6-3ubuntu0.2"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "gir1.2-blockdev-2.0",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-btrfs2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-crypto2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-dm2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-fs2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-kbd2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-loop2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-lvm-dbus2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-lvm2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-mdraid2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-mpath2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-nvdimm2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-part-err2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-part2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-plugins-all",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-swap2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-utils2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev-vdo2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "libblockdev2",
"binary_version": "2.23-2ubuntu3+esm1"
},
{
"binary_name": "python3-blockdev",
"binary_version": "2.23-2ubuntu3+esm1"
}
],
"priority_reason": "Allows local privilege escalation"
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "libblockdev",
"purl": "pkg:deb/ubuntu/libblockdev@2.23-2ubuntu3+esm1?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.23-2ubuntu3+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.22-1",
"2.23-2",
"2.23-2ubuntu2",
"2.23-2ubuntu3"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "gir1.2-udisks-2.0",
"binary_version": "2.8.4-1ubuntu2+esm1"
},
{
"binary_name": "libudisks2-0",
"binary_version": "2.8.4-1ubuntu2+esm1"
},
{
"binary_name": "udisks2",
"binary_version": "2.8.4-1ubuntu2+esm1"
},
{
"binary_name": "udisks2-bcache",
"binary_version": "2.8.4-1ubuntu2+esm1"
},
{
"binary_name": "udisks2-btrfs",
"binary_version": "2.8.4-1ubuntu2+esm1"
},
{
"binary_name": "udisks2-lvm2",
"binary_version": "2.8.4-1ubuntu2+esm1"
},
{
"binary_name": "udisks2-vdo",
"binary_version": "2.8.4-1ubuntu2+esm1"
},
{
"binary_name": "udisks2-zram",
"binary_version": "2.8.4-1ubuntu2+esm1"
}
],
"priority_reason": "Allows local privilege escalation"
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "udisks2",
"purl": "pkg:deb/ubuntu/udisks2@2.8.4-1ubuntu2+esm1?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.8.4-1ubuntu2+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.8.4-1",
"2.8.4-1build1",
"2.8.4-1ubuntu1",
"2.8.4-1ubuntu2"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "gir1.2-blockdev-2.0",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-btrfs2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-crypto2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-dm2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-fs2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-kbd2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-loop2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-lvm-dbus2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-lvm2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-mdraid2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-mpath2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-nvdimm2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-part-err2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-part2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-plugins-all",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-swap2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev-utils2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "libblockdev2",
"binary_version": "2.26-1ubuntu0.1"
},
{
"binary_name": "python3-blockdev",
"binary_version": "2.26-1ubuntu0.1"
}
],
"priority_reason": "Allows local privilege escalation"
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "libblockdev",
"purl": "pkg:deb/ubuntu/libblockdev@2.26-1ubuntu0.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.26-1ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.25-2build1",
"2.26-1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "gir1.2-udisks-2.0",
"binary_version": "2.9.4-1ubuntu2.2"
},
{
"binary_name": "libudisks2-0",
"binary_version": "2.9.4-1ubuntu2.2"
},
{
"binary_name": "udisks2",
"binary_version": "2.9.4-1ubuntu2.2"
},
{
"binary_name": "udisks2-bcache",
"binary_version": "2.9.4-1ubuntu2.2"
},
{
"binary_name": "udisks2-btrfs",
"binary_version": "2.9.4-1ubuntu2.2"
},
{
"binary_name": "udisks2-lvm2",
"binary_version": "2.9.4-1ubuntu2.2"
},
{
"binary_name": "udisks2-zram",
"binary_version": "2.9.4-1ubuntu2.2"
}
],
"priority_reason": "Allows local privilege escalation"
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "udisks2",
"purl": "pkg:deb/ubuntu/udisks2@2.9.4-1ubuntu2.2?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.9.4-1ubuntu2.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.9.4-1",
"2.9.4-1build1",
"2.9.4-1ubuntu1",
"2.9.4-1ubuntu2"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "gir1.2-blockdev-3.0",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-btrfs3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-crypto3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-dm3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-fs3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-loop3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-lvm-dbus3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-lvm3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-mdraid3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-mpath3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-nvdimm3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-nvme3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-part3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-plugins-all",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-swap3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-tools",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev-utils3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "libblockdev3",
"binary_version": "3.1.1-1ubuntu0.1"
},
{
"binary_name": "python3-blockdev",
"binary_version": "3.1.1-1ubuntu0.1"
}
],
"priority_reason": "Allows local privilege escalation"
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "libblockdev",
"purl": "pkg:deb/ubuntu/libblockdev@3.1.1-1ubuntu0.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.1.1-1ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.0.3-1",
"3.0.4-1",
"3.1.0-1",
"3.1.0-1build1",
"3.1.1-1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "gir1.2-udisks-2.0",
"binary_version": "2.10.1-6ubuntu1.2"
},
{
"binary_name": "libudisks2-0",
"binary_version": "2.10.1-6ubuntu1.2"
},
{
"binary_name": "udisks2",
"binary_version": "2.10.1-6ubuntu1.2"
},
{
"binary_name": "udisks2-btrfs",
"binary_version": "2.10.1-6ubuntu1.2"
},
{
"binary_name": "udisks2-lvm2",
"binary_version": "2.10.1-6ubuntu1.2"
}
],
"priority_reason": "Allows local privilege escalation"
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "udisks2",
"purl": "pkg:deb/ubuntu/udisks2@2.10.1-6ubuntu1.2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.10.1-6ubuntu1.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.10.1-1ubuntu1",
"2.10.1-1ubuntu2",
"2.10.1-6",
"2.10.1-6build1",
"2.10.1-6ubuntu1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "gir1.2-udisks-2.0",
"binary_version": "2.10.1-12.1ubuntu1"
},
{
"binary_name": "libudisks2-0",
"binary_version": "2.10.1-12.1ubuntu1"
},
{
"binary_name": "udisks2",
"binary_version": "2.10.1-12.1ubuntu1"
},
{
"binary_name": "udisks2-btrfs",
"binary_version": "2.10.1-12.1ubuntu1"
},
{
"binary_name": "udisks2-lvm2",
"binary_version": "2.10.1-12.1ubuntu1"
}
],
"priority_reason": "Allows local privilege escalation"
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "udisks2",
"purl": "pkg:deb/ubuntu/udisks2@2.10.1-12.1ubuntu1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.10.1-12.1ubuntu1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.10.1-11ubuntu2",
"2.10.1-12ubuntu1"
]
}
],
"aliases": [],
"details": "A Local Privilege Escalation (LPE) vulnerability was found in libblockdev. Generally, the \"allow_active\" setting in Polkit permits a physically present user to take certain actions based on the session type. Due to the way libblockdev interacts with the udisks daemon, an \"allow_active\" user on a system may be able escalate to full root privileges on the target host. Normally, udisks mounts user-provided filesystem images with security flags like nosuid and nodev to prevent privilege escalation. However, a local attacker can create a specially crafted XFS image containing a SUID-root shell, then trick udisks into resizing it. This mounts their malicious filesystem with root privileges, allowing them to execute their SUID-root shell and gain complete control of the system.",
"id": "UBUNTU-CVE-2025-6019",
"modified": "2026-04-22T07:53:18Z",
"published": "2025-06-17T16:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-6019"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-6019"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2025/06/17/4"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7577-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7578-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7577-2"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7578-2"
}
],
"related": [
"USN-7577-1",
"USN-7578-1",
"USN-7577-2",
"USN-7578-2"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-6019"
]
}
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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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