A Logical Volume Manager / LVM primer for Linux

About LVM LVM is an abstraction layer that provides block devices same kind of disk partitions. This is done by using 3 layers: physical volumes PV - disk partitions; volume groups VG - aggregates of physical volumes, could be across multiple disks or multiple partitions, whatever; logical volume...

kernel: soft-lockups in iov_iter_copy_from_user_atomic() could result in DoS

A flaw was found in the Linux kernel’s implementation of biovecs. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device,...

Privilege Escalation

linux-kvm is vulnerable to privilege escalation. The vulnerability exists as the rbd block device driver in drivers/block/rbd.c used incomplete permission checking for access to rbd devices, which could be leveraged by local attackers to map or unmap rbd block devices...

Important: kernel

Issue Overview: A flaw was found in the Linux kernel. When changing screen size, an out-of-bounds memory write can occur leading to memory corruption or a denial of service. Due to the nature of the flaw, privilege escalation cannot be fully ruled out. CVE-2020-14390 A flaw was found in the...

UBUNTU-CVE-2020-25641

A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue...

CVE-2020-25284

The rbd block device driver in drivers/block/rbd.c in the Linux kernel through 5.8.9 used incomplete permission checking for access to rbd devices, which could be leveraged by local attackers to map or unmap rbd block devices, aka CID-f44d04e696fe...

CVE-2020-17376

An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously undergone live migration, a user may gain access to destination host devices that share the same paths ...

Design/Logic Flaw

An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously undergone live migration, a user may gain access to destination host devices that share the same paths ...

PYSEC-2020-243

An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously undergone live migration, a user may gain access to destination host devices that share the same paths ...

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...

Fedora Update for nbdkit FEDORA-2019-a75665981b

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...

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 30 Update: libnbd-1.0.3-1.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...

Fedora Update for nbdkit FEDORA-2019-ac3b1d7930

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...

Fedora Update for nbdkit FEDORA-2019-1b30db2125

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-1.0.2-1.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...

Fedora Update for libnbd FEDORA-2019-749d828945

The remote host is missing an update for the Copyright C 2019 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...

[SECURITY] Fedora 29 Update: nbdkit-1.12.7-1.fc29

NBD is a protocol for accessing block devices hard disks and disk-like things over the network. nbdkit is a toolkit for creating NBD servers. The key features are: Multithreaded NBD server written in C with good performance. Minimal dependencies for the basic server. Liberal license BSD allows...

[SECURITY] Fedora 30 Update: nbdkit-1.12.7-1.fc30

NBD is a protocol for accessing block devices hard disks and disk-like things over the network. nbdkit is a toolkit for creating NBD servers. The key features are: Multithreaded NBD server written in C with good performance. Minimal dependencies for the basic server. Liberal license BSD allows...