Transient Execution of Non-canonical Accesses

Bulletin ID: AMD-SB-1010 Potential Impact: Data Leakage Severity: Medium Summary AMD reviewed “Transient Execution of Non-Canonical Accesses“ submitted by a researcher demonstrating that AMD CPUs may transiently execute non-canonical loads and store using only the lower 48 address bits. CVE Detai...

Xen Inappropriate x86 IOMMU Timeout Detection / Handling (XSA-372)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a vulnerability due to inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPUs issuing such commands. In the...

AZL-6554 CVE-2021-29657 affecting package kernel for versions less than 5.10.78.1-1

arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in...

CVE-2021-29657

arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in...

Race condition

arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in...

CVE-2021-29657

CVE-2021-29657 affects the Linux kernel KVM SVM nested virtualization (AMD). A TOCTOU race in arch/x86/kvm/svm/nested.c/nested_svm_vmrun allows a guest to bypass interception checks and corrupt the saved L1 host context, potentially enabling a guest-to-host influence over host MSR state via neste...

CVE-2021-29657

arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in...

About the security content of macOS Big Sur 11.5

About the security content of macOS Big Sur 11.5 This document describes the security content of macOS Big Sur 11.5. About Apple security updates For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases...

Debian: Security Advisory (DSA-4941-1)

The remote host is missing an update for the Debian 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...

[SECURITY] [DLA 2714-1] linux-4.19 security update

Debian LTS Advisory DLA-2714-1 [email protected] https://www.debian.org/lts/security/ Ben Hutchings July 20, 2021 https://wiki.debian.org/LTS Package : linux-4.19 Version : 4.19.194-3deb9u1 CVE ID : CVE-2020-36311 CVE-2021-3609 CVE-2021-33909 CVE-2021-34693 Debian Bug : 990072 Several...

CVE-2021-28692

inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPUs issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU...

DEBIAN-CVE-2021-28692

inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPUs issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU...

CVE-2021-28692

inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPUs issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU...

Design/Logic Flaw

inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPUs issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU...

CVE-2021-28692

inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPUs issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU...

CVE-2021-28692

inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPUs issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU...

CVE-2021-28692

inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPUs issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU...

UBUNTU-CVE-2021-28692

inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPUs issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU...

CVE-2021-28692

CVE-2021-28692 affects the Xen hypervisor and is described as an inappropriate x86 IOMMU timeout detection/handling issue. The vulnerability arises when IOMMU commands are processed in parallel with CPU operations, with wait loops applying timeouts and potentially misclassifying timeouts as crash...

CVE-2021-28692

inappropriate x86 IOMMU timeout detection / handling IOMMUs process commands issued to them in parallel with the operation of the CPUs issuing such commands. In the current implementation in Xen, asynchronous notification of the completion of such commands is not used. Instead, the issuing CPU...