1391 matches found
[SECURITY] Fedora 33 Update: xen-4.14.0-14.fc33
This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...
Fedora: Security Advisory for xen (FEDORA-2020-df772b417b)
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...
An issue was discovered in the Linux kernel through 5.10.1 as used with Xen through 4.14.x. The Linux kernel PV block backend expects the kernel thread handler to reset ring->xenblkd to NULL when stopped. However the handler may not have time to run if the frontend quickly toggles between the states connect and disconnect. As a consequence the block backend may re-use a pointer after it was freed. A misbehaving guest can trigger a dom0 crash by continuously connecting / disconnecting a block frontend. Privilege escalation and information leaks cannot be ruled out. This only affects systems with a Linux blkback.
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Bitdefender Hypervisor Introspection Code Execution Vulnerability
Bidefender Hypervisor Introspection HVI is a software from Bidefender Romania that checks the memory safety of running virtual machines at the Hypervisor layer using the VM self-test APIs of the Xen and KVM hypervisors. The software blocks code execution in abnormal memory by virtualizing the...
Xen Project DoS Vulnerability (XSA-359)
According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a denial of service vulnerability due to the de-referencing of a NULL pointer. Only ARM systems are affected. Note that Nessus has checked the changeset versions based on the xen.git chan...
Debian DSA-4812-1 : xen - security update
Multiple vulnerabilities have been discovered in the Xen hypervisor : Several security issues affecting Xenstore could result in cross domain access denial of service, information leaks or privilege escalation or denial of service against xenstored. Additional vulnerabilities could result in...
DEBIAN-CVE-2020-29486
An issue was discovered in Xen through 4.14.x. Nodes in xenstore have an ownership. In oxenstored, a owner could give a node away. However, node ownership has quota implications. Any guest can run another guest out of quota, or create an unbounded number of nodes owned by dom0, thus running...
ALPINE-CVE-2020-29481
An issue was discovered in Xen through 4.14.x. Access rights of Xenstore nodes are per domid. Unfortunately, existing granted access rights are not removed when a domain is being destroyed. This means that a new domain created with the same domid will inherit the access rights to Xenstore nodes...
DEBIAN-CVE-2020-29567
An issue was discovered in Xen 4.14.x. When moving IRQs between CPUs to distribute the load of IRQ handling, IRQ vectors are dynamically allocated and de-allocated on the relevant CPUs. De-allocation has to happen when certain constraints are met. If these conditions are not met when first checke...
CVE-2020-29566
An issue was discovered in Xen through 4.14.x. When they require assistance from the device model, x86 HVM guests must be temporarily de-scheduled. The device model will signal Xen when it has completed its operation, via an event channel, so that the relevant vCPU is rescheduled. If the device...
[SECURITY] Fedora 32 Update: xen-4.13.2-4.fc32
This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...
[SECURITY] Fedora 33 Update: xen-4.14.0-12.fc33
This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...
DEBIAN-CVE-2020-29040
An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service stack corruption, cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671...
ALPINE-CVE-2020-29040
An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service stack corruption, cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671...
Fedora: Security Advisory for xen (FEDORA-2020-6dd36a716c)
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...
[SECURITY] Fedora 31 Update: xen-4.12.3-8.fc31
This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...
The vulnerability of Xen hypervisors arises from the simultaneous execution using a shared resource with incorrect synchronization. This “race condition” allows a malicious actor to cause a service failure or increase their privileges.
The vulnerability of Xen hypervisors arises from the simultaneous execution using a shared resource with incorrect synchronization. Exploiting this vulnerability can allow an attacker to cause service failures or increase their privileges...
Xen Platypus information leak via power sidechannel (XSA-351)
An information disclosure vulnerability exists in power/energy monitoring interfaces, which can be used to create covert channels and infer the operations and data used by other contexts within the system. C Tenable Network Security, Inc. include'compat.inc'; if description scriptid142889;...