CVE-2021-28689

CVE-2021-28689 concerns the Xen hypervisor. The issue affects 32-bit PV guests running in ring 1 on x86, where 32-bit PV guest kernels were paravirtualised in the original design. The underlying cause is speculative execution side-channel risk in this ring, with Indirect Branch Restricted Specula...

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...

SUSE SLES11 Security Update : xen (SUSE-SU-2020:14444-1)

The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2020:14444-1 advisory. - Improper invalidation for page table updates by a virtual guest operating system for multiple IntelR Processors may allow an authenticated...

SUSE: Security Advisory (SUSE-SU-2018:2528-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

SUSE: Security Advisory (SUSE-SU-2018:2037-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

Guest triggered use-after-free in Linux xen-netback

ISSUE DESCRIPTION A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux...

SQL Injection Vulnerability in PV Power Plant Monitoring System of Jiangsu Goodway Power Technology Co.

Jiangsu Goodway Power Supply Technology Co., Ltd. is a new energy high-tech enterprise. A SQL injection vulnerability exists in the monitoring system of the photovoltaic power plant of Jiangsu Goodway Power Technology Co. Ltd, which can be exploited by attackers to obtain sensitive information fr...

The vulnerability in the components arch/*/xen/p2m.c and drivers/xen/gntdev.c of the Linux operating system’s kernel allows a attacker to cause a service failure.

The vulnerability in the components arch//xen/p2m.c and drivers/xen/gntdev.c of Linux operating systems is related to errors in grant matching in PV mode. Exploiting this vulnerability can allow an attacker to cause service failures...

Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel (Raspberry Pi) vulnerabilities (USN-4945-2)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4945-2 advisory. USN-4945-1 fixed vulnerabilities in the Linux kernel for Ubuntu 20.04 LTS and Ubuntu 18.04 LTS. This update provides the corresponding Linux...

Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4945-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4945-1 advisory. It was discovered that the Nouveau GPU driver in the Linux kernel did not properly handle error conditions in some situations. A local attack...

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9220)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9220 advisory. - Revert 'x86/vmlinux: Use INT3 instead of NOP for linker fill bytes' John Donnelly Orabug: 32576398 CVE-2021-3411 - netfilter: xtables: Use correc...

x86: Speculative vulnerabilities with bare (non-shim) 32-bit PV guests

ISSUE DESCRIPTION 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 virtualization. In AMD64, Xen had to use a different...

SUSE: Security Advisory (SUSE-SU-2020:3088-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

SUSE: Security Advisory (SUSE-SU-2019:0825-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

SUSE: Security Advisory (SUSE-SU-2017:2873-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4904-1)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4904-1 advisory. Ben Harris discovered that the Linux kernel would strip extended privilege attributes of files when performing a failed unprivileged system call. A local...

Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9172)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9172 advisory. - Xen/gnttab: handle p2m update errors on a per-slot basis Jan Beulich Orabug: 32651477 CVE-2021-28038 - scsi: iscsi: Verify lengths on passthrough PDU...

Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9135)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9135 advisory. 4.14.35-2047.500.9.3.el7uek - net/rds: Reject error code change Ka-Cheong Poon Orabug: 32577425 - PCI: hotplug: Add module parameter to allow user...

Important: kernel

Issue Overview: An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be...

Amazon Linux 2 : kernel (ALAS-2021-1616)

The version of kernel installed on the remote host is prior to 4.14.225-168.357. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1616 advisory. An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV...