CVE-2025-52555

Publication date 26 June 2025

Last updated 31 October 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Ceph is a distributed object, block, and file storage platform. In versions 17.2.7, 18.2.1 through 18.2.4, and 19.0.0 through 19.2.2, an unprivileged user can escalate to root privileges in a ceph-fuse mounted CephFS by chmod 777 a directory owned by root to gain access. The result of this is that a user could read, write and execute to any directory owned by root as long as they chmod 777 it. This impacts confidentiality, integrity, and availability. It is patched in versions 17.2.8, 18.2.5, and 19.2.3.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ceph	25.10 questing	Vulnerable
	25.04 plucky	Vulnerable
	24.10 oracular	Ignored end of life, was needs-triage
	24.04 LTS noble	Vulnerable
	22.04 LTS jammy	Vulnerable
	20.04 LTS focal	Vulnerable
	18.04 LTS bionic	Vulnerable
	16.04 LTS xenial	Vulnerable
	14.04 LTS trusty	Vulnerable

Notes

mdeslaur

This is fixed in (17.2.9-0ubuntu0.22.04.1) in jammy-updates. This is fixed in (19.2.3-0ubuntu1) in questing-proposed. See the following bug for pending 19.2.3 SRUs to other releases: https://bugs.launchpad.net/ubuntu/+source/ceph/+bug/2119024

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
ceph	Upstream: https://github.com/ceph/ceph/pull/60314 Upstream: https://github.com/ceph/ceph/pull/64356

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Adjacent
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	High
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N