Red Hat Bugzilla – Bug 1031702
CVE-2013-4592 kernel: kvm: memory leak when memory slot is moved with assigned device
Last modified: 2018-02-07 18:02:12 EST
When a user memory slot is moved (ie. the base_gfn changes), iommu pages are neither unpinned nor unmapped. The memory for these pages then cannot be recovered without rebooting the system.
Local user with ability to assign device (with access to PCI sysfs files for a device) could use this flaw to DoS the system.
This issue has been addressed in following products:
Red Hat Enterprise Linux 6
Via RHSA-2013:1645 https://rhn.redhat.com/errata/RHSA-2013-1645.html