An update for qemu-kvm-rhev is now available for Red Hat Enterprise LinuxOpenStack Platform 5.0 (Icehouse) for RHEL 6.Red Hat Product Security has rated this update as having a security impact ofModerate. A Common Vulnerability Scoring System (CVSS) base score, which gives adetailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.
KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linuxon AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the user-spacecomponent for running virtual machines using KVM in environments managed by RedHat Enterprise Virtualization Manager.Security Fix(es):* Quick emulator(Qemu) built with the virtio framework is vulnerable to anunbounded memory allocation issue. It was found that a malicious guest usercould submit more requests than the virtqueue size permits. Processing a requestallocates a VirtQueueElement and therefore causes unbounded memory allocation onthe host controlled by the guest. (CVE-2016-5403)Red Hat would like to thank hongzhenhao (Marvel Team) for reporting this issue.
For details on how to apply this update, which includes the changes described inthis advisory, refer to:https://access.redhat.com/articles/11258After installing this update, shut down all running virtual machines. Once allvirtual machines have shut down, start them again for this update to takeeffect.Red Hat OpenStack 5.0 for RHEL 6
MD5: 8c1eccc7104b05002873b3878162d968SHA-256: d4647df0eae12399431cfbed9970101576f0356b581fe3ee001c3342c9ff9378
MD5: 70bb255dc71aa02be4083e62cc817107SHA-256: 9a1daad0b7dcb7a29ce40bfd6de03b3662dae3a3111815539cfe69485942d902
MD5: ee56349e8709765e9f5011ba2f3409a4SHA-256: 4b5c377626441343a78763b75717dc267baa5fffe1a631f390df268d97571048
MD5: 1e3698ca942da1bfd944b8aa735b6e31SHA-256: d46df1ca84c21fe43c43fed13ea343a336d553046b7d6b3ed94d837e728b69e6
MD5: 1678171a69d510a9c031b5e11a93b94bSHA-256: 684c5348555013a4dfb3fb504988e1ff563114eaf66073d8828de3a3e04c7c0c
(The unlinked packages above are only available from the Red Hat Network)
1358359 – CVE-2016-5403 Qemu: virtio: unbounded memory allocation on host via guest leading to DoS
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