Design/Logic Flaw

An issue was discovered in Xen through 4.14.x. An x86 PV guest can trigger a host OS crash when handling guest access to MSRMISCENABLE. When a guest accesses certain Model Specific Registers, Xen first reads the value from hardware to use as the basis for auditing the guest access. For the...

Design/Logic Flaw

An issue was discovered in Xen through 4.14.x. x86 PV guest kernels can experience denial of service via SYSENTER. The SYSENTER instruction leaves various state sanitization activities to software. One of Xen's sanitization paths injects a GP fault, and incorrectly delivers it twice to the guest...

CVE-2020-25602

An issue was discovered in Xen through 4.14.x. An x86 PV guest can trigger a host OS crash when handling guest access to MSRMISCENABLE. When a guest accesses certain Model Specific Registers, Xen first reads the value from hardware to use as the basis for auditing the guest access. For the...

x86 pv guest kernel DoS via SYSENTER

ISSUE DESCRIPTION The SYSENTER instruction leaves various state sanitization activities to software. One of Xen's sanitization paths injects a GP fault, and incorrectly delivers it twice to the guest. This causes the guest kernel to observe a kernel-privilege GP fault typically fatal rather than ...

Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4526-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4526-1 advisory. It was discovered that the AMD Cryptographic Coprocessor device driver in the Linux kernel did not properly deallocate memory in some...

Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4525-1)

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-4525-1 advisory. It was discovered that the AMD Cryptographic Coprocessor device driver in the Linux kernel did not properly deallocate memory in some...

FreeBSD : FreeBSD -- bhyve privilege escalation via VMCS access (2c5b9cd7-f7e6-11ea-88f8-901b0ef719ab)

AMD and Intel CPUs support hardware virtualization using specialized data structures that control various aspects of guest operation. These are the Virtual Machine Control Structure VMCS on Intel CPUs, and the Virtual Machine Control Block VMCB on AMD CPUs. Insufficient access controls allow root...

FreeBSD -- bhyve privilege escalation via VMCS access

Problem Description: AMD and Intel CPUs support hardware virtualization using specialized data structures that control various aspects of guest operation. These are the Virtual Machine Control Structure VMCS on Intel CPUs, and the Virtual Machine Control Block VMCB on AMD CPUs. Insufficient acces...

FreeBSD-SA-20:29.bhyve_svm

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-20:29.bhyvesvm Security Advisory The FreeBSD Project Topic: bhyve SVM guest escape Category: core Module: bhyve Announced: 2020-09-15 Credits: Maxime Villard...

FreeBSD -- bhyve SVM guest escape

Problem Description: A number of AMD virtualization instructions operate on host physical addresses, are not subject to nested page table translation, and guest use of these instructions was not trapped. Impact: From kernel mode a malicious guest can write to arbitrary host memory with some...

FreeBSD-SA-20:28.bhyve_vmcs

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-20:28.bhyvevmcs Security Advisory The FreeBSD Project Topic: bhyve privilege escalation via VMCS access Category: core Module: bhyve Announced: 2020-09-15...

HPSBHF03694 rev. 1 - AMD® Radeon™ Graphics Driver D3DKMTEscape Handler Denial of Service

Potential Security Impact Denial of Service Source: HP, HP Product Security Response Team PSRT Reported by: AMD VULNERABILITY SUMMARY AMD has informed HP of a potential security vulnerability identified in the AMD® Radeon™ Graphics Drivers for Windows which may allow denial of service. For detail...

AMD Radeon DirectX 11 Driver Vulnerabilities - Lenovo Support US

No description provided...

AMD Radeon DirectX 11 Driver Vulnerabilities - Lenovo Support US

Lenovo Security Advisory: LEN-42153 Potential Impact: Code execution Severity: High Scope of Impact: Industry-wide CVE Identifier: CVE-2020-6100, CVE-2020-6101, CVE-2020-6102, CVE-2020-6103 Summary Description: AMD reported potential vulnerabilities in a specific virtual machine VM configuration...

Amazon Linux 2 : kernel (ALAS-2020-1480)

The version of kernel installed on the remote host is prior to 4.14.192-147.314. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2020-1480 advisory. 2024-06-19: CVE-2020-14356 was added to this advisory. The Serial Attached SCSI SAS implementation in the Linux...

About the security content of macOS Catalina 10.15 - Apple Support

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 are available. Recent releases are listed on the Apple security updates page. Apple security documents reference...

Intel, ARM, IBM, AMD Processors Vulnerable to New Side-Channel Attacks

It turns out that the root cause behind several previously disclosed speculative execution attacks against modern processors, such as Meltdown and Foreshadow, was misattributed to 'prefetching effect,' resulting in hardware vendors releasing incomplete mitigations and countermeasures. Sharing its...

Intel, ARM, IBM, AMD Processors Vulnerable to New Side-Channel Attacks

It turns out that the root cause behind several previously disclosed speculative execution attacks against modern processors, such as Meltdown and Foreshadow, was misattributed to 'prefetching effect,' resulting in hardware vendors releasing incomplete mitigations and countermeasures. Sharing its...

Vulnerability Spotlight: Multiple vulnerabilities in RemoteFX affects, AMD, Intel chips

Piotr Bania of Cisco Talos discovered these vulnerabilities. Blog by Jon Munshaw. Cisco Talos recently discovered multiple vulnerabilities in Intel’s Graphics Accelerator Driver and in an AMD Radeon driver. The Intel driver was released in 2019 and is used in multiple Intel integrated and...

CVE-2020-6102

An exploitable code execution vulnerability exists in the Shader functionality of AMD Radeon DirectX 11 Driver atidxx64.dll 26.20.15019.19000. An attacker can provide a a specially crafted shader file to trigger this vulnerability, resulting in code execution. This vulnerability can be triggered...