An update for qemu-kvm-rhev is now available for Red Hat Enterprise LinuxOpenStack Platform 6.0 (Juno) for RHEL 7.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 Block driver for iSCSI images support(virtio-blk) is vulnerable to a heap buffer overflow issue. It could occur whileprocessing iSCSI asynchronous I/O ioctl(2) calls. A user inside guest could usethis flaw to crash the Qemu process resulting in DoS or potentially leverage itto execute arbitrary code with privileges of the Qemu process on the host.(CVE-2016-5126)* 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 reportingCVE-2016-5403.
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 6.0 for RHEL 7
MD5: 388489747503bf7e5679a1334e8edea8SHA-256: a94c0e89ace45eac3032f11f18d6d39953a42c6ee261d2d578600b9a38452dff
MD5: b69cefdcf266192b300525fa2a55db44SHA-256: 757414615b1d96df3cea8c01a62ef66975eadfce01f344d8cb4205cd83e6087b
MD5: 236884551ff81b5f896399f128998d0bSHA-256: 7c50554554d757cfed5786d347bd66191825effa36184875b0ebcf6c4a39ad79
MD5: cc5e87b0e239b613dcba8c3d52de17f4SHA-256: 60d6c5f595b58134b837fcbfc38e4124c7bb7ff66bc95779a45cd6e9d89c9d3e
MD5: 2528cc222087bd4ee7c9a4ac8bf85d70SHA-256: 4cde725205c07e2397f86948aba8a34258d6a0200abe5e19f4825e86759962ab
MD5: ff206f645105d15a1cd85c48c5962482SHA-256: 70516a1ac8707862fd95d32ecf8f4f1552f91e509bfc20e6b5570109068d00f6
MD5: 8a92dd969c8696e7531b22fe5e1ed68fSHA-256: f3a9662980f6687eeb37e52174a0cdfed256cc38092dee7d6fbd33a764399926
MD5: 9b5e3c480f49bf2eb5912bdd23b16307SHA-256: e3e9eeb357e7fb33f425308913b12601252caa00f863ba7fd36875ead3bc4e48
MD5: 88d1ebfc3d8e0d7de2110c02e4cabb33SHA-256: 334203df05dafc3e9a043320a0a48a09bcd7bf4f0c1c5e3b1275ff0d118e52ef
(The unlinked packages above are only available from the Red Hat Network)
1340924 – CVE-2016-5126 Qemu: block: iscsi: buffer overflow in iscsi_aio_ioctl1358359 – CVE-2016-5403 Qemu: virtio: unbounded memory allocation on host via guest leading to DoS
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