Description
The cluster logical volume manager daemon (clvmd) in lvm2-cluster in LVM2 before 2.02.72, as used in Red Hat Global File System (GFS) and other products, does not verify client credentials upon a socket connection, which allows local users to cause a denial of service (daemon exit or logical-volume change) or possibly have unspecified other impact via crafted control commands.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | lvm2 | 2.02.66-3 | — |
| Debian 13 | lvm2 | 2.02.66-3 | — |
| Debian 12 | lvm2 | 2.02.66-3 | — |
| Debian 5.0 | lvm2 | 2.02.39-8 | DSA-2095-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Global File System 4 | lvm2-cluster | 2.02.42-5.el4_8.2 | RHSA-2010:0568 |
| Red Hat Rhel Cluster Storage 5 | lvm2-cluster | 2.02.56-7.el5_5.4 | RHSA-2010:0567 |
Advisories 3
- RHSA-2010:0567 Red Hat Security Advisory: lvm2-cluster security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2010:0568 Red Hat Security Advisory: lvm2-cluster security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-2095-1 lvm2 - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
References
- USN-1001-1 vendor-advisory
- [linux-lvm] 20100728 lvm2-cluster (clvmd) security fix (Moderate) mailing-list
- 40759 third-party-advisory
- lvm2-socket-privilege-escalation(60809) vdb-entry
- RHSA-2010:0568 vendor-advisory
- RHSA-2010:0567 vendor-advisory
- 1024258 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=614248
- SUSE-SR:2010:017 vendor-advisory
- 66753 vdb-entry
- ADV-2010-1944 vdb-entry