CVE-2020-2732: Exposure of Sensitive Information to an Unauthorized Actor

A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest...

Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2020-5543)

The remote Oracle Linux 6 / 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2020-5543 advisory. - KVM: nVMX: Check IO instruction VM-exit conditions Oliver Upton Orabug: 30944739 CVE-2020-2732 - KVM: nVMX: Refactor IO bitmap checks into helper function...

Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2020-5540)

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2020-5540 advisory. - KVM: nVMX: Check IO instruction VM-exit conditions Oliver Upton Orabug: 30847136 CVE-2020-2732 - KVM: nVMX: Refactor IO bitmap checks into helper function...

Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2017-1271)

The remote host is missing an update for the Huawei EulerOS 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...

Debian DSA-4564-1 : linux - security update

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service, or information leak. - CVE-2018-12207 It was discovered that on Intel CPUs supporting hardware virtualisation with Extended Page Tables EPT, a guest VM may manipulate the...

Debian DSA-4469-1 : libvirt - security update

Two vulnerabilities were discovered in Libvirt, a virtualisation abstraction library, allowing an API client with read-only permissions to execute arbitrary commands via the virConnectGetDomainCapabilities API, or read or execute arbitrary files via the virDomainSaveImageGetXMLDesc API...

[SECURITY] [DSA 4469-1] libvirt security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4469-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso June 22, 2019 https://www.debian.org/security/faq -...

[SECURITY] [DSA 4469-1] libvirt security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4469-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso June 22, 2019 https://www.debian.org/security/faq -...

Denial Of Service (DoS)

Linux kernel is vulnerable to denial of service vulnerability. The vulnerability exists in Linux kernel built with KVM virtualisationCONFIGKVM support with Virtual Function I/O feature CONFIGVFIO enabled. A malicious guest device could send a virtual interrupt guest IRQ with a larger 1024 index...

EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1498)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An integer overflow vulnerability was found in the ringbufferresize calculations in which a privileged user can adjust the size o...

Arbitrary Code Execution

kernel-rt is vulnerable to arbitrary code execution attacks. The vulnerability exists as arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users...

[SECURITY] [DSA 4137-1] libvirt security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4137-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff March 14, 2018 https://www.debian.org/security/faq -...

MGASA-2018-0062 kernel update provides 4.14 series and fixes security vulnerabilities

This kernel update provides an upgrade to the 4.14 longterm branch, currently based on 4.14.10. It also fixes at least the following security issues: An elevation of privilege vulnerability in the Broadcom wi-fi driver CVE-2017-0786. Use-after-free vulnerability in the sndpcminfo function in the...

kernel-linus update provides 4.14 series and fixes security vulnerabilities

This kernel-linus update provides an upgrade to the 4.14 longterm branch, currently based on 4.14.10. It also fixes at least the following security issues: An elevation of privilege vulnerability in the Broadcom wi-fi driver CVE-2017-0786. Use-after-free vulnerability in the sndpcminfo function i...

kernel-tmb update provides 4.14 series and fixes security vulnerabilities

This kernel-tmb update provides an upgrade to the 4.14 longterm branch, currently based on 4.14.10. It also fixes at least the following security issues: An elevation of privilege vulnerability in the Broadcom wi-fi driver CVE-2017-0786. Use-after-free vulnerability in the sndpcminfo function in...

EulerOS 2.0 SP1 : kernel (EulerOS-SA-2017-1271)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to...

Virtuozzo 7 : readykernel-patch (VZA-2017-098)

According to the version of the vzkernel package and the readykernel-patch installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities : - Linux kernel built with the KVM virtualisation support CONFIGKVM, with nested virtualisation nVMX feature enabled...

[SECURITY] [DSA 4003-1] libvirt security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4003-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso October 19, 2017 https://www.debian.org/security/faq -...

[SECURITY] [DSA 4003-1] libvirt security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4003-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso October 19, 2017 https://www.debian.org/security/faq -...

Stack overflow

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service incorrect index...