The lvm2-cluster package contains support for Logical Volume Management(LVM) in a clustered environment.It was discovered that the cluster logical volume manager daemon (clvmd)did not verify the credentials of clients connecting to its control UNIXabstract socket, allowing local, unprivileged users to send controlcommands that were intended to only be available to the privileged rootuser. This could allow a local, unprivileged user to cause clvmd to exit,or request clvmd to activate, deactivate, or reload any logical volume onthe local system or another system in the cluster. (CVE-2010-2526)Note: This update changes clvmd to use a pathname-based socket rather thanan abstract socket. As such, the lvm2 update RHBA-2010:0569, which changesLVM to also use this pathname-based socket, must also be installed for LVMto be able to communicate with the updated clvmd.All lvm2-cluster users should upgrade to this updated package, whichcontains a backported patch to correct this issue. After installing theupdated package, clvmd must be restarted for the update to take effect.