USN-7577-1: libblockdev vulnerability

Publication date

18 June 2025

Overview

libblockdev could be made to run programs as an administrator.


Packages

Details

It was discovered that libblockdev incorrectly handled mount options when
resizing certain filesystems. A local attacker with an active session on
the console can use this issue to escalate their privileges to root.

It was discovered that libblockdev incorrectly handled mount options when
resizing certain filesystems. A local attacker with an active session on
the console can use this issue to escalate their privileges to root.

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
25.04 plucky libblockdev3 –  3.3.0-2ubuntu0.1
24.10 oracular libblockdev3 –  3.1.1-2ubuntu0.1
24.04 noble libblockdev3 –  3.1.1-1ubuntu0.1
22.04 jammy libblockdev2 –  2.26-1ubuntu0.1

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