Summary
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.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | libblockdev | 2.16-2ubuntu0.1~esm1 |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | libblockdev | 2.23-2ubuntu3+esm1 |
Vulnerabilities 1
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High 7.0CVE-2025-6019 Public exploit
Libblockdev: lpe from allow_active to root in libblockdev via udisks
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 udisk…
References
-
report
https://ubuntu.com/security/CVE-2025-6019