231 matches found
CVE-2022-33744
Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged...
Xen 信息泄露漏洞
Xen is an open source virtual machine monitor product from the University of Cambridge, UK. The product enables different and incompatible operating systems to run on the same computer and supports runtime migration to ensure uptime and avoid downtime. Xen has a security vulnerability that stems...
DEBIAN-CVE-2022-26364
x86 pv: Insufficient care with non-coherent mappings This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to...
CVE-2022-26363
x86 pv: Insufficient care with non-coherent mappings This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to...
ALPINE-CVE-2022-26362
x86 pv: Race condition in typeref acquisition Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to maintain invariants required for Xen's safety, e.g. PV guests may not have direct writeable access to pagetables; updates need auditing by...
ALPINE-CVE-2022-26363
x86 pv: Insufficient care with non-coherent mappings This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. Xen maintains a type reference count for pages, in addition to a regular reference count. This scheme is used to...
CVE-2022-23040
Linux PV device frontends vulnerable to attacks by backends This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. Several Linux PV device frontends are using the grant table interfaces for removing access rights of the...
DEBIAN-CVE-2022-23040
Linux PV device frontends vulnerable to attacks by backends This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. Several Linux PV device frontends are using the grant table interfaces for removing access rights of the...
UBUNTU-CVE-2022-23042
Linux PV device frontends vulnerable to attacks by backends This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. Several Linux PV device frontends are using the grant table interfaces for removing access rights of the...
Linux 竞争条件问题漏洞
Linux is an open source operating system from the Linux Foundation in the United States. A security vulnerability exists in Linux PV devices that stems from a competitive condition and the lack of return code testing in Linux, where a malicious backend of a PV device front-end driver can access...
Linux 竞争条件问题漏洞
Linux is an open source operating system from the Linux Foundation in the United States. A security vulnerability exists in Linux PV devices that stems from a competitive condition and the lack of return code testing in Linux, where a malicious backend of a PV device front-end driver can access...
Linux 竞争条件问题漏洞
Linux is an open source operating system from the Linux Foundation in the United States. A security vulnerability exists in Linux PV devices that stems from a competitive condition and the lack of return code testing in Linux, where a malicious backend of a PV device front-end driver can access...
PT-2022-4531 · Xen +5 · Xen +5
Name of the Vulnerable Software and Affected Versions: Xen affected versions not specified Description: The issue is caused by synchronization errors when using a shared resource in the Xen hypervisor's paravirtualization PV mode implementation. This can be exploited to cause a denial of service...
UBUNTU-CVE-2021-28713
Rogue backends can cause DoS of guests via high frequency events This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. Xen offers the ability to run PV backends in regular unprivileged guests, typically referred to as "drive...
The vulnerability of the virtualization paravirtualization mode implementation in Xen hypervisors allows a malicious actor to gain unauthorized access to protected information.
The vulnerability of the PV mode implementation in Xen hypervisors relates to the use of the Indirect Branch Restricted Speculation IBRS mechanism for indirect branch control. Exploiting this vulnerability can allow an attacker to gain unauthorized access to protected information...
CVE-2021-28689
x86: Speculative vulnerabilities with bare non-shim 32-bit PV guests 32-bit x86 PV guest kernels run in ring 1. At the time when Xen was developed, this area of the i386 architecture was rarely used, which is why Xen was able to use it to implement paravirtualisation, Xen's novel approach to...
CVE-2021-28689
x86: Speculative vulnerabilities with bare non-shim 32-bit PV guests 32-bit x86 PV guest kernels run in ring 1. At the time when Xen was developed, this area of the i386 architecture was rarely used, which is why Xen was able to use it to implement paravirtualisation, Xen's novel approach to...
CVE-2021-28689
x86: Speculative vulnerabilities with bare non-shim 32-bit PV guests 32-bit x86 PV guest kernels run in ring 1. At the time when Xen was developed, this area of the i386 architecture was rarely used, which is why Xen was able to use it to implement paravirtualisation, Xen's novel approach to...
USN-4982-1: Linux kernel vulnerabilities
Kiyin 尹亮 discovered that the NFC LLCP protocol implementation in the Linux kernel contained a reference counting error. A local attacker could use this to cause a denial of service system crash. CVE-2020-25670 Kiyin 尹亮 discovered that the NFC LLCP protocol implementation in the Linux kernel did n...
Cambridge Xen 缓冲区错误漏洞
Xen is an open source virtual machine monitor product from the University of Cambridge, UK. The product enables different and incompatible operating systems to run on the same computer and supports runtime migration to ensure uptime and avoid downtime. A security vulnerability in Xen's Bare 32-bi...