kernel: drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes WHY When PTEBufferSizeInRequests is zero, UBSAN reports the following warning because dmllog2 returns an unexpected negative value: shift exponent 4294966273 is t...

AMD Graphics Driver Vulnerabilities- November, 2023 - Lenovo Support US

No description provided...

kernel: KVM: SEV-ES / SEV-SNP VMGEXIT double fetch vulnerability

A flaw was found in KVM AMD Secure Encrypted Virtualization SEV in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the VMGEXIT handler recursively. If an attacker manages to call the handler multiple time...

x86/AMD: mismatch in IOMMU quarantine page table levels

ISSUE DESCRIPTION The current setup of the quarantine page tables assumes that the quarantine domain domio has been initialized with an address width of DEFAULTDOMAINADDRESSWIDTH 48 and hence 4 page table levels. However domio being a PV domain gets the AMD-Vi IOMMU page tables levels based on th...

x86: BTC/SRSO fixes not fully effective

ISSUE DESCRIPTION The fixes for XSA-422 Branch Type Confusion and XSA-434 Speculative Return Stack Overflow are not IRQ-safe. It was believed that the mitigations always operated in contexts with IRQs disabled. However, the original XSA-254 fix for Meltdown XPTI deliberately left interrupts enabl...

AMD Ryzen Security Breach

AMD Ryzen is a central processing unit CPU from Ultraviolet Semiconductor AMD. AMD Ryzen suffers from a security vulnerability that stems from incorrect input validation in the SMM Supervisor that could allow an attacker with a compromised SMI handler to gain Ring0 access, which could lead to...

CVE-2023-20592

Improper or unexpected behavior of the INVD instruction in some AMD CPUs may allow an attacker with a malicious hypervisor to affect cache line write-back behavior of the CPU leading to a potential loss of guest virtual machine VM memory integrity...

PT-2023-7300 · Amd · Amd Radeon Graphics Display Driver

Name of the Vulnerable Software and Affected Versions: AMD RadeonTM Graphics display driver affected versions not specified Description: The issue is related to improper input validation in the AMD RadeonTM Graphics display driver, which may allow an attacker to corrupt the display, potentially...

AMD EPYC Security Vulnerability

AMD EPYC is a line of x86 architecture server microprocessors from AMD, known in Chinese as "霄龙", which utilizes the Zen microarchitecture. A security vulnerability exists in AMD EPYC, which stems from a TOCTOU in the ASP bootloader that could allow an attacker with physical access to tamper with...

AMD Client Vulnerabilities – November 2023

Bulletin ID: AMD-SB-4002 Potential Impact: Varies by CVE, see descriptions below Severity: Varies by CVE, see descriptions below Summary Potential vulnerabilities in AMD Secure Processor ASP, AMD System Management Unit SMU, and other platform components were reported, and mitigations are being...

AMD SMM Supervisor Vulnerability Security Notice

Bulletin ID: AMD-SB-7011 Potential Impact: Loss of confidentiality, integrity, and availability Severity: High Summary External researchers reported a potential vulnerability during SMM Supervisor initialization which may impact some AMD processors. On systems that do not have Supervisor Mode...

AMD INVD Instruction Security Notice

Bulletin ID: AMD-SB-3005 Potential Impact: Memory integrity Severity: Medium Summary External researchers reported a potential vulnerability with the INVD instruction that may lead to a loss of SEV-ES and SEV-SNP guest virtual machine VM memory integrity. CVE Details Refer to Glossary for...

Moderate: linux-firmware security, bug fix, and enhancement update

The linux-firmware packages contain all of the firmware files that are required by various devices to operate. Security Fixes: hw amd: Return Address Predictor vulnerability leading to information disclosure CVE-2023-20569 For more details about the security issues, including the impact, a CVSS...

AMD EPYC Security Vulnerability

AMD EPYC is an x86 architecture server microprocessor product line from AMD, known as "Xiao Long" in Chinese, utilizing the Zen microarchitecture. The AMD EPYC suffers from a security vulnerability that stems from insufficient validation of the DRAM address in the System Management Unit SMU, whic...

AMD CPU 安全漏洞

AMD CPUs are a family of CPUs from AMD. The AMD CPUs suffer from an improper instruction vulnerability that stems from the fact that incorrect or unexpected behavior of the INVD instruction would allow an attacker with a malicious hypervisor to affect the cache line write-back behavior of the CPU...

AMD Server Vulnerabilities – Nov 2023

Bulletin ID: AMD-SB-3002 Potential Impact: Varies by CVE, see descriptions below Severity: Varies by CVE, see descriptions below Summary Potential vulnerabilities in the AMD Secure Processor ASP, AMD System Management Unit SMU, AMD Secure Encrypted Virtualization SEV, AMD Secure Encrypted...

RHEL 8 : linux-firmware (RHSA-2023:7109)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:7109 advisory. The linux-firmware packages contain all of the firmware files that are required by various devices to operate. Security Fixes: hw amd: Return Address...

AMD Secure Processor Buffer Error Vulnerability

AMD Secure Processor ASP is a standalone ARM Coretex-A5 chip from UltraMicroelectronics AMD. The AMD Secure Processor suffers from a buffer error vulnerability that stems from the fact that insufficient boundary checking in the AMD Secure Processor could lead to an attacker accessing memory outsi...

AMD Graphics Driver Vulnerabilities – November 2023

Bulletin ID: AMD-SB-6003 Potential Impact: Varies by CVE, see descriptions below Severity: Varies by CVE, see descriptions below Summary AMD received reports of vulnerabilities potentially affecting some AMD Graphics products. Refer to the CVE Details section for information about each CVE. CVE...

AMD CPU Security Vulnerability

AMD CPUs are a family of CPUs from UltraMicroelectronics AMD. The AMD CPUs suffer from a security vulnerability that stems from insufficient protection in the System Management Mode SMM code could allow an attacker to achieve privilege escalation via local access...