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ceph: privilege escalation by unprivileged users in a ceph-fuse mounted CephFS

🗓️ 29 Jan 2026 07:02:14Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 10 Views

Unprivileged users on CephFS ceph-fuse can escalate to root by chmod 777 on directories owned by root.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9aarch64cephfs-mirror-debuginfo2:20.1.0-144.el9cpcephfs-mirror-debuginfo-2:20.1.0-144.el9cp.aarch64.rpm
Red Hat Enterprise Linux9ppc64lecephfs-mirror-debuginfo2:20.1.0-144.el9cpcephfs-mirror-debuginfo-2:20.1.0-144.el9cp.ppc64le.rpm
Red Hat Enterprise Linux9s390xcephfs-mirror-debuginfo2:20.1.0-144.el9cpcephfs-mirror-debuginfo-2:20.1.0-144.el9cp.s390x.rpm
Red Hat Enterprise Linux9x86_64cephfs-mirror-debuginfo2:20.1.0-144.el9cpcephfs-mirror-debuginfo-2:20.1.0-144.el9cp.x86_64.rpm
Red Hat Enterprise Linux10aarch64cephfs-mirror-debuginfo2:20.1.0-144.el10cpcephfs-mirror-debuginfo-2:20.1.0-144.el10cp.aarch64.rpm
Red Hat Enterprise Linux10ppc64lecephfs-mirror-debuginfo2:20.1.0-144.el10cpcephfs-mirror-debuginfo-2:20.1.0-144.el10cp.ppc64le.rpm
Red Hat Enterprise Linux10s390xcephfs-mirror-debuginfo2:20.1.0-144.el10cpcephfs-mirror-debuginfo-2:20.1.0-144.el10cp.s390x.rpm
Red Hat Enterprise Linux10x86_64cephfs-mirror-debuginfo2:20.1.0-144.el10cpcephfs-mirror-debuginfo-2:20.1.0-144.el10cp.x86_64.rpm
Red Hat Enterprise Linux9noarchcephfs-top2:20.1.0-144.el9cpcephfs-top-2:20.1.0-144.el9cp.noarch.rpm
Red Hat Enterprise Linux10noarchcephfs-top2:20.1.0-144.el10cpcephfs-top-2:20.1.0-144.el10cp.noarch.rpm
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23 Aug 2026 20:54Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.16.5
EPSS0.00178
SSVC
10