fkie_cve-2025-6019
Vulnerability from fkie_nvd
Published
2025-06-19 12:15
Modified
2025-07-10 14:15
Severity ?
Summary
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.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "Se encontr\u00f3 una vulnerabilidad de Escalada de Privilegios Locales (LPE) en libblockdev. Generalmente, la configuraci\u00f3n \"allow_active\" de Polkit permite a un usuario f\u00edsicamente presente realizar ciertas acciones seg\u00fan el tipo de sesi\u00f3n. Debido a la forma en que libblockdev interact\u00faa con el daemon udisks, un usuario \"allow_active\" en un sistema puede escalar a privilegios de root completos en el host objetivo. Normalmente, udisks monta im\u00e1genes del sistema de archivos proporcionadas por el usuario con indicadores de seguridad como nosuid y nodev para evitar la escalada de privilegios. Sin embargo, un atacante local puede crear una imagen XFS especialmente manipulada que contenga un shell SUID-root y luego enga\u00f1ar a udisks para que la redimensione. Esto monta su sistema de archivos malicioso con privilegios de root, lo que le permite ejecutar su shell SUID-root y obtener el control total del sistema."
}
],
"id": "CVE-2025-6019",
"lastModified": "2025-07-10T14:15:26.630",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 5.9,
"source": "secalert@redhat.com",
"type": "Secondary"
}
]
},
"published": "2025-06-19T12:15:19.727",
"references": [
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2025:10796"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2025:9320"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2025:9321"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2025:9322"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2025:9323"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2025:9324"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2025:9325"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2025:9326"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2025:9327"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2025:9328"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2025:9878"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/security/cve/CVE-2025-6019"
},
{
"source": "secalert@redhat.com",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2370051"
},
{
"source": "secalert@redhat.com",
"url": "https://cdn2.qualys.com/2025/06/17/suse15-pam-udisks-lpe.txt"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2025/06/17/5"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2025/06/17/6"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2025/06/18/1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2025/06/msg00018.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://news.ycombinator.com/item?id=44325861"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.bleepingcomputer.com/news/linux/new-linux-udisks-flaw-lets-attackers-get-root-on-major-linux-distros/"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-250"
}
],
"source": "secalert@redhat.com",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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