CVE-2025-52555: CephFS Permission Escalation Vulnerability in Ceph Fuse mounted FS
A non-privileged user can change the permissions from a directory owned by the root user an can gain access to the targeted directory.
Other sources
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.
— MITRE
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-52555?
CVE-2025-52555 has a high severity due to the potential for unauthorized root privilege escalation.
How do I fix CVE-2025-52555?
To fix CVE-2025-52555, update to Ceph versions that are not affected, specifically later than 18.2.5 and 19.2.3.
Who is affected by CVE-2025-52555?
CVE-2025-52555 affects Ceph versions 17.2.7, 18.2.1 through 18.2.4, and 19.0.0 through 19.2.2.
What type of vulnerability is CVE-2025-52555?
CVE-2025-52555 is a privilege escalation vulnerability within the Ceph file system.
What should I do if I am using a vulnerable version affected by CVE-2025-52555?
If you are using a vulnerable version affected by CVE-2025-52555, it is crucial to upgrade to a patched version immediately.