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Ubuntu 20.04 LTS USN-7577-2 critical: libblockdev privilege escalation

ubuntu
Calendar Grey June 18, 2025
Dist Ubuntu Esm H88
The libblockdev team has released an update to address a crucial privilege escalation vulnerability that impacts Ubuntu versions 20.04 and 18.04 LTS.
libblockdev could be made to run programs as an administrator.

Summary

libblockdev could be made to run programs as an administrator.

Software Description:

- libblockdev: libblockdev introspection data

Details:

USN-7577-1 fixed a vulnerability in libblockdev. This update provides

the corresponding update for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

Original advisory 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.

Topics%20covered

Topics Covered

security advisory critical privilege escalation Ubuntu root access libblockdev

Update Instructions

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

Ubuntu 20.04 LTS
  libblockdev2                    2.23-2ubuntu3+esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  libblockdev2                    2.16-2ubuntu0.1~esm1
                                  Available with Ubuntu Pro

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

References

https://ubuntu.com/security/notices/USN-7577-2

https://ubuntu.com/security/notices/USN-7577-1

CVE-2025-6019

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7577-2

Topics%20covered

Topics Covered

security advisory critical privilege escalation Ubuntu root access libblockdev

Package Information

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