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CVE-2016-5126

Status Candidate

Overview

Heap-based buffer overflow in the iscsi_aio_ioctl function in block/iscsi.c in QEMU allows local guest OS users to cause a denial of service (QEMU process crash) or possibly execute arbitrary code via a crafted iSCSI asynchronous I/O ioctl call.

Related Files

Gentoo Linux Security Advisory 201609-01
Posted Sep 26, 2016
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201609-1 - Multiple vulnerabilities have been found in QEMU, the worst of which could lead to arbitrary code execution, or cause a Denial of Service condition. Versions less than 2.7.0-r2 are affected.

tags | advisory, denial of service, arbitrary, vulnerability, code execution
systems | linux, gentoo
advisories | CVE-2016-2841, CVE-2016-4001, CVE-2016-4002, CVE-2016-4020, CVE-2016-4439, CVE-2016-4441, CVE-2016-4453, CVE-2016-4454, CVE-2016-4964, CVE-2016-5106, CVE-2016-5107, CVE-2016-5126, CVE-2016-5238, CVE-2016-5337, CVE-2016-5338, CVE-2016-6490, CVE-2016-6833, CVE-2016-6834, CVE-2016-6836, CVE-2016-6888, CVE-2016-7116, CVE-2016-7156, CVE-2016-7157, CVE-2016-7422
SHA-256 | b8f2f8b58b5e089ef9db3161d7a00541378147b42a93c4728c7909df11bd7c0d
Red Hat Security Advisory 2016-1763-01
Posted Aug 24, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-1763-01 - KVM is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the user-space component for running virtual machines using KVM in environments managed by Red Hat Enterprise Virtualization Manager. Security Fix: Quick Emulator built with the Block driver for iSCSI images support is vulnerable to a heap-based buffer overflow issue. The flaw could occur while processing iSCSI asynchronous I/O ioctl calls. A user inside a guest could exploit this flaw to crash the QEMU process resulting in denial of service, or potentially leverage it to execute arbitrary code with QEMU-process privileges on the host.

tags | advisory, denial of service, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-5126, CVE-2016-5403
SHA-256 | b936c597f2b38222b536ed0b72d6892520736086fdf90ec2bb052711f97d3675
Red Hat Security Advisory 2016-1756-01
Posted Aug 24, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-1756-01 - KVM is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the user-space component for running virtual machines using KVM in environments managed by Red Hat Enterprise Virtualization Manager. Security Fix: Quick Emulator built with the Block driver for iSCSI images support is vulnerable to a heap-based buffer overflow issue. The flaw could occur while processing iSCSI asynchronous I/O ioctl calls. A user inside a guest could exploit this flaw to crash the QEMU process resulting in denial of service, or potentially leverage it to execute arbitrary code with QEMU-process privileges on the host.

tags | advisory, denial of service, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-5126, CVE-2016-5403
SHA-256 | ee2a907a02311463c8bfdc49dca292045a8a802656502a0b7229331d7c4a4137
Red Hat Security Advisory 2016-1655-01
Posted Aug 23, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-1655-01 - KVM is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the user-space component for running virtual machines using KVM in environments managed by Red Hat Enterprise Virtualization Manager. Security Fix: Quick Emulator built with the Block driver for iSCSI images support is vulnerable to a heap buffer overflow issue. It could occur while processing iSCSI asynchronous I/O ioctl calls. A user inside guest could use this flaw to crash the Qemu process resulting in DoS or potentially leverage it to execute arbitrary code with privileges of the Qemu process on the host.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-5126, CVE-2016-5403
SHA-256 | 4aef31c589e9eb632262467a2391d662c3f9b8731a9caabe096c9d84b5c43a8b
Red Hat Security Advisory 2016-1654-01
Posted Aug 23, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-1654-01 - KVM is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the user-space component for running virtual machines using KVM in environments managed by Red Hat Enterprise Virtualization Manager. Security Fix: Quick Emulator built with the Block driver for iSCSI images support is vulnerable to a heap buffer overflow issue. It could occur while processing iSCSI asynchronous I/O ioctl calls. A user inside guest could use this flaw to crash the Qemu process resulting in DoS or potentially leverage it to execute arbitrary code with privileges of the Qemu process on the host.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-5126, CVE-2016-5403
SHA-256 | be57c89124c98f2cea8b05cd613985cbc6e73e7db5d4fb67260fd412e521dc99
Red Hat Security Advisory 2016-1653-01
Posted Aug 23, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-1653-01 - KVM is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the user-space component for running virtual machines using KVM in environments managed by Red Hat Enterprise Virtualization Manager. Security Fix: Quick Emulator built with the Block driver for iSCSI images support is vulnerable to a heap buffer overflow issue. It could occur while processing iSCSI asynchronous I/O ioctl calls. A user inside guest could use this flaw to crash the Qemu process resulting in DoS or potentially leverage it to execute arbitrary code with privileges of the Qemu process on the host.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-5126, CVE-2016-5403
SHA-256 | 784b309832846f10d29d70069df5da9ac9c80c535442ac182995d7d0b236dbb3
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
SHA-256 | 6cde5cb99c15b597456c232a84fe2c4a2d7a2394f9e433c09f015f5e373d1fc2
Red Hat Security Advisory 2016-1607-01
Posted Aug 12, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-1607-01 - KVM is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the user-space component for running virtual machines using KVM in environments managed by Red Hat Enterprise Virtualization Manager. Security Fix: Quick Emulator built with the Block driver for iSCSI images support is vulnerable to a heap buffer overflow issue. It could occur while processing iSCSI asynchronous I/O ioctl calls. A user inside guest could use this flaw to crash the Qemu process resulting in DoS or potentially leverage it to execute arbitrary code with privileges of the Qemu process on the host.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-5126, CVE-2016-5403
SHA-256 | d67f5e6e01f8d9341a59fcc3055fec2ec69675435c8bc04cff2c9ee1c9bd3355
Red Hat Security Advisory 2016-1606-01
Posted Aug 12, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-1606-01 - KVM is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm packages provide the user-space component for running virtual machines using KVM. Security Fix: Quick Emulator built with the Block driver for iSCSI images support is vulnerable to a heap buffer overflow issue. It could occur while processing iSCSI asynchronous I/O ioctl calls. A user inside guest could use this flaw to crash the Qemu process resulting in DoS or potentially leverage it to execute arbitrary code with privileges of the Qemu process on the host.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-5126, CVE-2016-5403
SHA-256 | 55b580f3cc8e781eb560abc0504ebbb683e94803d14225a9ae6fea8a2aec4eff
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
SHA-256 | bcefab0e4c0425ce4a72b7328693b95ea5ed7a47800b8d6f73f293a7b21d1431
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