USN-5062-1 linux, linux-aws, linux-kvm, linux-lts-xenial vulnerability

Maxim Levitsky discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel did not properly prevent a guest VM from enabling AVIC in nested guest VMs. An attacker in a guest VM could use this to write to portions of the host's physical memory...

ruspiro-boot (>=0.3.0 <=0.3.2), ruspiro-console (>=0.0.2 <=0.3.2) +6 more potentially affected by CVE-2020-36435 via ruspiro-singleton (>=0.0.2 <=0.3.1)

ruspiro-singleton CARGO version =0.0.2, =0.3.0, =0.0.2, =0.0.2, =0.3.0, =0.1.0, =0.0.2, =0.4.0, =0.0.2, =0.3.1 Source cves: CVE-2020-36435 Source advisory: OSV:GHSA-FQQ2-XP7M-XVM8...

UBUNTU-CVE-2021-3653

A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB virtual machine control block provided by the L1 guest to spawn/handle a nested guest L2. Due to improper validation of the "intctl" field, this issue could allow a malicious ...

qemu: out-of-bound heap buffer access via an interrupt ID field

An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU on aarch64 platform. The issue occurs because while writing an interrupt ID to the controller memory area, it is not masked to be 4 bits wide. It may lead to the said issue while updating...

QEMU: msix: OOB access during mmio operations may lead to DoS

An out-of-bounds access flaw was found in the Message Signalled Interrupt MSI-X device support of QEMU. This issue occurs while performing MSI-X mmio operations when a guest sent address goes beyond the mmio region. A guest user or process may use this flaw to crash the QEMU process resulting in ...

SUSE SLED15 / SLES15 Security Update : spice-vdagent (SUSE-SU-2021:2614-1)

The remote SUSE Linux SLED15 / SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2614-1 advisory. - Update to version 0.21.0 - CVE-2020-25650: memory DoS via arbitrary entries in activexfers hash table bsc1177780 - CVE-2020-25651:...

Exploit for Out-of-bounds Write in Qemu

This repository contains PoCs Proof of Concepts for two vulnerabilities: CVE-2020-14364 Qemu and CVE-2020-1472 Zerologon. CVE-2020-14364 Qemu The Qemu PoC is a C code that exploits a vulnerability in the Qemu emulator. The code includes two files: exp1irq.c and exp2configread.c. These files appea...

An EPYC escape: Case-study of a KVM breakout

Posted by Felix Wilhelm, Project Zero Introduction KVM for Kernel-based Virtual Machine is the de-facto standard hypervisor for Linux-based cloud environments. Outside of Azure, almost all large-scale cloud and hosting providers are running on top of KVM, turning it into one of the fundamental...

OESA-2021-1241 qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Security Fixes: A NULL pointer dereference flaw was found in the SCSI emulation support of QEMU in versions before 6.0.0. This flaw allows a privileged guest user to crash the QEMU process on the host,...

qemu: out-of-bound heap buffer access via an interrupt ID field

An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU on aarch64 platform. The issue occurs because while writing an interrupt ID to the controller memory area, it is not masked to be 4 bits wide. It may lead to the said issue while updating...

QEMU: msix: OOB access during mmio operations may lead to DoS

An out-of-bounds access flaw was found in the Message Signalled Interrupt MSI-X device support of QEMU. This issue occurs while performing MSI-X mmio operations when a guest sent address goes beyond the mmio region. A guest user or process may use this flaw to crash the QEMU process resulting in ...

SUSE: Security Advisory (SUSE-SU-2018:1482-1)

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...

An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on aarch64 platform. The issue occurs because while writing an interrupt ID to the controller memory area it is not masked to be 4 bits wide. It may lead to the said issue while updating controller state fields and their subsequent processing. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

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GSD-2021-1000703 i2c: i801: Don't generate an interrupt on bus reset

i2c: i801: Don't generate an interrupt on bus reset This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.4.271 by commit...

UVI-2021-1000703 i2c: i801: Don't generate an interrupt on bus reset

i2c: i801: Don't generate an interrupt on bus reset This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.4.271 by commit...

GSD-2021-1000689 i2c: i801: Don't generate an interrupt on bus reset

i2c: i801: Don't generate an interrupt on bus reset This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.9.271 by commit...

UVI-2021-1000689 i2c: i801: Don't generate an interrupt on bus reset

i2c: i801: Don't generate an interrupt on bus reset This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.9.271 by commit...

UVI-2021-1000673 i2c: i801: Don't generate an interrupt on bus reset

i2c: i801: Don't generate an interrupt on bus reset This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.235 by commit...

GSD-2021-1000673 i2c: i801: Don't generate an interrupt on bus reset

i2c: i801: Don't generate an interrupt on bus reset This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.235 by commit...

UVI-2021-1000653 i2c: i801: Don't generate an interrupt on bus reset

i2c: i801: Don't generate an interrupt on bus reset This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.193 by commit...