ALT-PU-2025-9056-3

Package update libblockdev in branch p10

Version3.3.1-alt1

Published2025-07-10

Max severityHIGH

Severity:

Closed issues (2)

HIGH7.0

Уязвимость библиотеки libblockdev, связанная с возможностью монтирования файловой системы и управлением накопителями в результате некорректного разграничения доступа при обращении к демону udisks, позволяющая нарушителю повысить свои привилегии до уровня root

Published: 2025-08-07Modified: 2026-04-20

CVSS 3.xHIGH 7.0

CVSS:3.x/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0MEDIUM 6.0

CVSS:2.0/AV:L/AC:H/Au:S/C:C/I:C/A:C

References

CVE-2025-6019

HIGH7.0

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.

Published: 2025-06-19Modified: 2026-04-15

CVSS 3.xHIGH 7.0

CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Closed bugs (1)

CVE-2025-6019