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CVE-2016-4952

Status Candidate

Overview

QEMU (aka Quick Emulator), when built with VMWARE PVSCSI paravirtual SCSI bus emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds array access) via vectors related to the (1) PVSCSI_CMD_SETUP_RINGS or (2) PVSCSI_CMD_SETUP_MSG_RING SCSI command.

Related Files

Ubuntu Security Notice USN-3047-2
Posted Aug 12, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3047-2 - USN-3047-1 fixed vulnerabilities in QEMU. The patch to fix CVE-2016-5403 caused a regression which resulted in save/restore failures when virtio memory balloon statistics are enabled. This update temporarily reverts the security fix for CVE-2016-5403 pending further investigation. Various other issues were addressed.

tags | advisory, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-4952, CVE-2016-5107, CVE-2016-5126, CVE-2016-5337, CVE-2016-5403
MD5 | cae358870aa7d20ee999c525f0efb8dc
Ubuntu Security Notice USN-3047-1
Posted Aug 5, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3047-1 - Li Qiang discovered that QEMU incorrectly handled 53C9X Fast SCSI controller emulation. A privileged attacker inside the guest could use th is issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2016-4439, CVE-2016-4441, CVE-2016-4453, CVE-2016-4454, CVE-2016-4952, CVE-2016-5105, CVE-2016-5106, CVE-2016-5107, CVE-2016-5126, CVE-2016-5238, CVE-2016-5337, CVE-2016-5338, CVE-2016-5403, CVE-2016-6351
MD5 | bc47352f46382b5dc3167a3e00a42dc3
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