Red Hat Security Advisory 2011-1531-03 - KVM is a full virtualization solution for Linux on AMD64 and Intel 64 systems. qemu-kvm is the user-space component for running virtual machines using KVM. It was found that qemu-kvm did not properly drop supplemental group privileges when the root user started guests from the command line with the "-runas" option. A qemu-kvm process started this way could use this flaw to gain access to files on the host that are accessible to the supplementary groups and not accessible to the primary group.
16923c194b532ddc6c8d7a2dcc4465a1625af19775eb04b43ffaf4553809d229Ubuntu Security Notice 1177-1 - Andrew Griffiths discovered that QEMU did not correctly drop privileges when using the 'runas' argument. Under certain circumstances a local attacker could exploit this to escalate privileges.
2db2352dca97c03e93a4de8cf6727155b5bccf0dc86d6436fc53e270444efcddDebian Linux Security Advisory 2282-1 - Two vulnerabilities have been discovered in KVM, a solution for full virtualization on x86 hardware.
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