CVE-2023-20569

CVE-2023-20569 concerns a side-channel vulnerability in some AMD CPUs where an attacker may influence the return-address predictor, enabling speculative execution at attacker-controlled addresses and potential information disclosure. The vulnerability is discussed across multiple connected source...

CVE-2023-31346

CVE-2023-31346 is confirmed by connected advisories to affect linux-firmware related components and SEV firmware handling. The issue describes memory initialization failure in SEV firmware that may allow a privileged attacker to access stale data from other guests, impacting guest memory integrit...

CVE-2023-20584

CVE-2023-20584 involves AMD IOMMU handling of certain address ranges with invalid DTEs. The issue can allow a local privileged attacker with a compromised Hypervisor to induce DTE faults and bypass SEV-SNP RMP checks, potentially compromising guest integrity. Connected advisories note affected ke...

CVE-2023-20573

CVE-2023-20573 describes a defect in AMD SEV-SNP on 3rd/4th Gen EPYC processors where a privileged attacker can prevent delivery of debug exceptions to SEV-SNP guests, potentially causing guests to miss expected debug information. The issue is local to privileged attackers and affects the deliver...

CVE-2023-31347

CVE-2023-31347 stems from a code bug in Secure_TSC used by SEV firmware, potentially allowing a high-privilege attacker to cause a guest to observe an incorrect TSC, risking guest integrity. Affected: AMD SEV/SEV-SNP firmware; impact: loss of guest integrity with no disclosed remote code executio...

CVE-2023-20575

CVE-2023-20575 describes a potential power side-channel vulnerability in some AMD processors that could allow an authenticated attacker to use the power reporting functionality to monitor a program’s execution inside an AMD SEV VM , potentially leaking sensitive information. The AMD security bull...

CVE-2021-26345

CVE-2021-26345 is an AMD ASP/firmware vulnerability where failure to validate the APCB value may allow a privileged attacker with physical access to tamper with the APCB token, forcing an out-of-bounds memory read and potentially causing a denial of service. Public details across SUSE OSV entries...

CVE-2021-46774

CVE-2021-46774 describes insufficient input validation in the AMD ABL, enabling a privileged attacker to perform arbitrary DRAM writes and potentially execute code or escalate privileges. Connected advisories confirm this vulnerability is among issues addressed by AMD/PI firmware updates and kern...

CVE-2023-20591

CVE-2023-20591 : Improper re-initialization of the IOMMU during a DRTM event may allow an untrusted platform configuration to persist, enabling an attacker to read or modify hypervisor memory and potentially compromise confidentiality, integrity, and availability. The vulnerability is discussed i...

CVE-2021-46766

CVE-2021-46766 is reported as a vulnerability in AMD ASP/ASP Bootloader where improper clearing of sensitive data may expose secret keys to a privileged attacker with access to ASP SRAM, potentially compromising confidentiality. Concrete technical context appears in accompanying advisories: AMD’s...

CVE-2024-21980

The CVE-2024-21980 issue is in AMD SNP firmware (SEV-SNP). The root cause is improper restriction of write operations in SNP firmware, which could allow a local malicious hypervisor to overwrite a guest VM’s memory or the UMC seed, leading to loss of confidentiality and integrity. Documents consi...

CVE-2024-21978

CVE-2024-21978 involves improper input validation in SEV-SNP, enabling a malicious hypervisor with Local access and low complexity to read or overwrite guest memory, risking data leakage and data corruption. Reports tie this to AMD SEV-SNP firmware; advisories (AMD SB) indicate the issue is addre...

CVE-2023-20566

CVE-2023-20566: Improper address validation in ASP with SNP enabled may potentially compromise guest memory integrity. In SUSE advisories SUSE-SU-2023:4665-1 and SUSE-SU-2023:4664-1, kernel-firmware updates mitigate this alongside other SNP/SMU-related issues by updating AMD ucode to 20231030 and...

CVE-2023-20578

CVE-2023-20578 describes a TOCTOU in SMM that could allow a ring-0 attacker with BIOS menu/UEFI shell access to modify a communications buffer and potentially execute arbitrary code. Connected documents confirm this vulnerability in the AMD Secure Processor (ASP) / Platform Initialization (PI) co...

CVE-2023-31355

CVE-2023-31355 is associated with SNP firmware write restrictions; a malicious hypervisor could overwrite a guest’s UMC seed and potentially read memory from a decommissioned guest. Connected advisories (Fedora Linux-firmware updates around 2025-03-11) provide concrete remediation: update linux-f...

CVE-2022-23830

CVE-2022-23830 affects AMD SNP/SMM scenarios where SMM configuration may not be immutable as intended, potentially causing a limited loss of guest memory integrity. The connected advisories (AMD security bulletins and SUSE kernel-firmware updates) indicate mitigation through firmware updates (PI ...