CVE-2020-10761

An assertion failure issue was found in the Network Block DeviceNBD Server in all QEMU versions before QEMU 5.0.1. This flaw occurs when an nbd-client sends a spec-compliant request that is near the boundary of maximum permitted request length. A remote nbd-client could use this flaw to crash the...

Authorization Bypass

kernel is vulnerable to authorization bypass. In KVM Kernel-based Virtual Machine environments using raw format virtio disks backed by a partition or LVM volume, a privileged guest user could bypass intended restrictions and issue read and write requests and other SCSI commands on the host, and...

Denial Of Service (DoS)

kernel is vulnerable to denial of service. A flaw was found in the Xenbus code for the unified block-device I/O interface back end. A privileged guest user could use this flaw to cause a denial of service on the host system running the Xen hypervisor...

Privilege Escalation

udev is vulnerable to privilege escalation. It was discovered that udev did not properly check the origin of Netlink messages. A local attacker could use this flaw to gain root privileges via a crafted Netlink message sent to udev, causing it to create a world-writable block device file for an...

Information Disclosure

xen is vulnerable to privilege escalation. A guest operating system could issue a block device request and read or write arbitrary memory locations, which could lead to privilege escalation...

QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block LBA in an iscsicoblockstatus routine. A remote user could use this flaw to crash the QEMU process,...

Huawei EulerOS: Security Advisory for qemu-kvm (EulerOS-SA-2017-1224)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Fedora Update for libnbd FEDORA-2019-ec2eedaa9e

The remote host is missing an update for the Copyright C 2020 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

Fedora Update for libnbd FEDORA-2019-d20b357d44

The remote host is missing an update for the SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

CVE-2019-16089

An improper return check flaw was found in the Linux kernel’s network block device driver functionality when the user call query to check the status of existing network block devices. This flaw allows a local user to crash the system. Mitigation To mitigate this issue, prevent module nbd from bei...

libnbd Input Validation Error Vulnerability

libnbd is a library for editing NBD Network Block Device clients. An input validation error vulnerability exists in libnbd. An attacker can exploit this vulnerability to execute arbitrary code...

DEBIAN-CVE-2019-14842

Structured reply is a feature of the newstyle NBD protocol allowing the server to send a reply in chunks. A bounds check which was supposed to test for chunk offsets smaller than the beginning of the request did not work because of signed/unsigned confusion. If one of these chunks contains a...

The vulnerability of the Network Block Device (NBD) hardware emulation server in QEMU allows a hacker to induce a maintenance failure.

The vulnerability of the Network Block Device NBD emulation server of QEMU is related to an uncontrolled resource consumption. Exploiting this vulnerability can allow a remote attacker to trigger a service failure through a specially crafted request...

[SECURITY] Fedora 31 Update: libnbd-1.0.3-1.fc31

NBD =EF=BF=BD=EF=BF=BD=EF=BF=BD Network Block Device =EF=BF=BD=EF=BF=BD=EF =BF=BD is a protocol for accessing Block Devices hard disks and disk-like things over a Network. This is the NBD client library in userspace, a simple library for writing NBD clients. The key features are: Synchronous and...

Fedora Update for libnbd FEDORA-2019-f6ea699dbb

The remote host is missing an update for the SPDX-FileCopyrightText: 2019 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

[SECURITY] Fedora 29 Update: libnbd-1.0.3-1.fc29

NBD =EF=BF=BD=EF=BF=BD=EF=BF=BD Network Block Device =EF=BF=BD=EF=BF=BD=EF =BF=BD is a protocol for accessing Block Devices hard disks and disk-like things over a Network. This is the NBD client library in userspace, a simple library for writing NBD clients. The key features are: Synchronous and...

kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c

A flaw was found in the Linux kernel’s block driver implementation blkdrainqueue function where a use-after-free condition could be triggered while draining the outstanding command queue in the systems block device subsystem. An attacker could use this flaw to crash the system or corrupt local...

kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c

A flaw was found in the Linux kernel’s block driver implementation blkdrainqueue function where a use-after-free condition could be triggered while draining the outstanding command queue in the systems block device subsystem. An attacker could use this flaw to crash the system or corrupt local...

[SECURITY] Fedora 29 Update: libnbd-1.0.2-1.fc29

NBD =EF=BF=BD=EF=BF=BD=EF=BF=BD Network Block Device =EF=BF=BD=EF=BF=BD=EF =BF=BD is a protocol for accessing Block Devices hard disks and disk-like things over a Network. This is the NBD client library in userspace, a simple library for writing NBD clients. The key features are: Synchronous and...

[SECURITY] Fedora 30 Update: libnbd-1.0.2-1.fc30

NBD =EF=BF=BD=EF=BF=BD=EF=BF=BD Network Block Device =EF=BF=BD=EF=BF=BD=EF =BF=BD is a protocol for accessing Block Devices hard disks and disk-like things over a Network. This is the NBD client library in userspace, a simple library for writing NBD clients. The key features are: Synchronous and...