CVE-2021-26401

CVE-2021-26401 concerns Spectre Variant 2 mitigation on AMD CPUs. The description states that LFENCE/JMP mitigation (mitigation V2-2) may not sufficiently mitigate CVE-2017-5715 on some AMD processors. AMD advisories (AMD-SB-1040 and AMD-SB-1036) discuss mitigations and supported approaches: use ...

CVE-2022-29900

CVE-2022-29900 describes mis-trained branch predictions for return instructions that may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions. Connected advisories confirm this affects Linux-kernel components (e.g., linux-5.10 in Astra Linux; multiple Am...

CVE-2022-23825

CVE-2022-23825 affects AMD processors where branch-predictor aliases can cause misclassification of branches, potentially exposing information. The connected advisories show Linux kernel mitigations are being released for Amazon Linux 2/ALAS kernels (e.g., ALAS2KERNEL-5.10-2025-086 and ALAS2KERNE...

CVE-2023-20588

CVE-2023-20588 is a division-by-zero vulnerability on some AMD Zen1 CPUs that could cause speculative data leakage and affect confidentiality. The connected Amazon Linux 2 advisory (ALAS2KERNEL-5.4-2025-116) confirms the Linux kernel fix for kernel-5.4 series (e.g., 5.4.254-169.358.amzn2.aarch64/...

CVE-2021-26341

CVE-2021-26341 affects AMD CPUs; transient execution beyond unconditional direct branches may leak data. Public details describe local access risk with low NVD CVSS v2 but medium CVSS v3.1 (6.5) and local attack vector. Connected advisories (MiracleLinux, IBM/Red Hat and others) mention this CVE ...

CVE-2022-23824

Summary: CVE-2022-23824 is listed as a Xen-related vulnerability in Debian security advisories and Gentoo GLSA, indicating multiple vulnerabilities in the Xen hypervisor that could lead to privilege escalation, denial of service, or information leaks. The Debian entry explicitly groups CVE-2022-2...

CVE-2023-20592

CVE-2023-20592 covers AMD CPUs where improper behavior of the INVD instruction could let a malicious hypervisor affect cache line write-back and potentially compromise guest VM memory integrity. Public documents in the connected set describe the issue across multiple IBM Power HMC/LINUX-firmware ...

CVE-2022-23823

CVE-2022-23823 describes a timing-attack information disclosure risk on AMD processors with DVFS. Connected sources show F5 advisories (K43357358) tying Hertzbleed to BIG-IP on AMD CPUs, listing affected BIG-IP branches (e.g., 17.x up to 17.5.03) with “Will not fix” for some lines, and provide a ...

CVE-2021-26342

CVE-2021-26342 is documented in the SUSE kernel-firmware advisories as part of a set of AMD/SEV-related fixes. The vulnerability description states that in SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) after a sequence including creation of a new VMCB, causing th...

CVE-2021-46744

Technical details about CVE-2021-46744 are not publicly provided in the supplied Connected documents. The initial entry mentions a SEV data-inference risk on AMD SEV guests, but no product/version/root-cause/fix is given here. Monitor for updates.

CVE-2021-26408

The CVE-2021-26408 issue affects AMD SEV-legacy firmware, where insufficient validation of elliptic curve points during SEV-legacy guest migration could lead to loss of guest integrity or confidentiality. This is rooted in inadequate point validation within SEV-legacy firmware. According to the c...

CVE-2020-12954

CVE-2020-12954 relates to an AMD Platform Security Processor (ASP) boot loader header where improper input and range validation can allow attacker-controlled values before signature verification, potentially enabling arbitrary code execution and bypassing SPI ROM protections to modify SPI ROM. Th...

CVE-2021-26312

CVE-2021-26312 is addressed in SUSE kernel-firmware updates. The advisory notes that failure to flush the IOMMU TLB may allow an IO device to access memory it should not, potentially compromising integrity. SUSE’s fixes update kernel-firmware to versions 20220411 (AMD microcode updates) and 20220...

CVE-2023-20521

CVE-2023-20521 describes a TOCTOU flaw in the AMD ASP Bootloader that could let an attacker with physical access tamper SPI ROM records after memory verification, risking confidentiality loss and potential DoS. Connected sources (SUSE kernel-firmware updates and AMD/SUSe advisories) confirm this ...

CVE-2021-46778

CVE-2021-46778 describes an information-disclosure side-channel vulnerability in AMD CPUs with SMT (Zen 1–Zen 4). The root cause is execution unit scheduler contention on SMT-enabled cores, allowing an attacker to infer data by measuring scheduler-queue contention. Public documents identify affec...

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-2021-26371

The CVE-2021-26371 entry concerns AMD Secure Processor (ASP)/AMD System Management Unit (SMU) where a compromised ABL or UApp could trigger a SHA256 system call to the bootloader, potentially exposing ASP memory to userspace and causing information disclosure. Technical details from connected sou...

CVE-2021-26398

CVE-2021-26398 affects the AMD Secure Processor (ASP) via insufficient input validation in SYS_KEY_DERIVE. A compromised user application or ABL may corrupt ASP OS memory, potentially enabling arbitrary code execution. Public details identify the vulnerability and associated risk to ASP/firmware,...

CVE-2021-26335

CVE-2021-26335 concerns the AMD Secure Processor (ASP) boot loader image header. The issue is improper input and range checking, enabling attacker-controlled values before signature validation and potentially allowing arbitrary code execution. In NVD/AMD documentation, the vulnerability is listed...

CVE-2020-12966

CVE-2020-12966 corresponds to an information-disclosure vulnerability in AMD EPYC processors’ SEV-ES and SEV-SNP. A local authenticated attacker could leak guest data via the malicious hypervisor. Affected products include AMD EPYC generations with SEV/SEV-ES, with SEV-SNP enabling a mitigation p...

CVE-2020-12988

CVE-2020-12988 affects AMD EPYC platforms (1st–3rd Gen) per AMD-SB-1021. The DoS issue is described as a hang during system reboot in the integrated chipset/AMD platform components (e.g., ASP/SMU/SEV family). Affected products include 1st Gen EPYC (Naples), 2nd Gen (Rome), and 3rd Gen (Milan) CPU...

CVE-2021-26340

CVE-2021-26340 is a published vulnerability affecting AMD SEV/SEV-ES environments. A malicious hypervisor with an unprivileged attacker process inside a guest VM may fail to flush the TLB, causing unexpected VM behavior and potential loss of integrity and confidentiality. Affected products includ...

CVE-2023-20527

CVE-2023-20527 concerns the AMD Secure Processor (ASP) Bootloader. The issue is an improper syscall input validation in the Bootloader, which may allow a privileged attacker to read memory out-of-bounds, potentially causing a denial-of-service. The CVSS v3.1 metrics indicate Network attack vector...

CVE-2021-46756

CVE-2021-46756 describes insufficient validation of inputs in SVC_MAP_USER_STACK in the AMD Secure Processor (ASP) bootloader. A malicious UApp or ABL could send malformed or invalid syscalls to the bootloader, potentially causing a denial of service and loss of integrity. The AMD security bullet...

CVE-2020-12944

CVE-2020-12944 affects AMD Secure Processor (ASP) firmware, where insufficient validation of BIOS image length could allow arbitrary code execution. AMD documentation (AMD-SB-1027/1021) lists affected platforms across desktop, mobile and server AMD systems and provides mitigations via AGESA PI fi...

CVE-2023-20520

CVE-2023-20520 affects the AMD Secure Processor (ASP) Bootloader. The issue is described as improper access control in the ASP Bootloader which may allow an attacker to corrupt the return address, causing a stack-based buffer overrun and potentially arbitrary code execution. Connected sources ide...

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-2021-26344

CVE-2021-26344 is an out-of-bounds memory write in the AMD PSP1 Configuration Block (APCB) processing that could let an attacker with BIOS access modify the BIOS image and sign the result, potentially corrupting APCB and enabling arbitrary code execution. Connected sources (AMD AMD-SB-3003/AMD-SB...

CVE-2021-26356

CVE-2021-26356 describes a TOCTOU vulnerability in the ASP bootloader that can allow tampering with the SPI ROM after memory reads, potentially causing S3 data corruption and information disclosure in AMD Secure Processor/ASP boot scenarios. Affected components include the ASP bootloader within A...

CVE-2021-26403

CVE-2021-26403 corresponds to an AMD SEV vulnerability: insufficient checks in SEV could allow a malicious hypervisor to disclose the launch secret, risking VM confidentiality. Documented impact: local attacker with low privileges could compromise confidentiality; exploit details are not provided...

CVE-2021-26329

CVE-2021-26329 affects the AMD System Management Unit (SMU). The available documents confirm an integer overflow when an invalid length is provided, potentially causing resource loss. The issue is listed for multiple AMD EPYC generations (1st/2nd/3rd Gen) in AMD’s SB-1021 bulletin. Mitigations in...

CVE-2021-26406

CVE-2021-26406 describes insufficient validation in parsing Owner’s Certificate Authority (OCA) certificates within AMD SEV/SEV-ES, potentially causing a host crash and denial of service. The vulnerability is documented across multiple AMD security bulletins (AMD-SB-3001, AMD-SB-4001) with mitiga...

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-2020-12951

CVE-2020-12951 describes a race condition in the AMD Platform Security Processor (ASP) firmware that could allow less-privileged x86 code to perform ASP SMM operations. Connected sources confirm this vulnerability and tie it to AMD ASP/SMU firmware, with AMD advisories indicating mitigations via ...

CVE-2021-26320

Technical details about CVE-2021-26320 are not publicly available in the provided connected documents; monitor for updates.

CVE-2021-26331

CVE-2021-26331 affects the AMD System Management Unit (SMU). The vulnerability description indicates a malicious user could manipulate mailbox entries to achieve arbitrary code execution. Impact and exploit details are not provided beyond this, but the AMD-SB-1021 bulletin notes mitigations via O...

CVE-2023-20526

CVE-2023-20526 affects the AMD ASP Bootloader (ASP) within AMD EPYC Embedded platforms. The issue is insufficient input validation in the ASP Bootloader, which could allow a privileged attacker with physical access to expose ASP memory contents and potentially breach confidentiality. Industry adv...

CVE-2021-26322

CVE-2021-26322 describes a vulnerability where the persistent platform private key may not be protected with a random IV, enabling a potential two-time pad attack. Affected hardware/firmware per provided documents: AMD Secure Processor (ASP) and AMD EPYC platform components across 1st–3rd Gen EPY...

CVE-2021-26330

CVE-2021-26330 describes a heap-based overflow in the AMD System Management Unit (SMU) that may result in resource loss. Connected sources confirm affected hardware as AMD EPYC generations (1st/2nd/3rd Gen) and associate the issue with SMU/ASP components. The AMD Bulletin AMD-SB-1021 provides mit...

CVE-2021-26321

CVE-2021-26321 corresponds to an insufficient ID command validation in the AMD SEV Firmware that can allow a local authenticated attacker to cause a denial of service of the Platform Security Processor (PSP). The vulnerability affects AMD EPYC platforms (1st–3rd Gen) with SEV/ASP components; the ...