Advanced Micro Devices (AMD) EPYC 7373X

Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to potentially overwrite a guest's memory or UMC seed resulting in loss of confidentiality and integrity.

Published: 2024-08-05T16:06:36.216Z
Updated: 2024-08-05T21:00:57.665Z

Improper input validation in SEV-SNP could allow a malicious hypervisor to read or overwrite guest memory potentially leading to data leakage or data corruption.

Published: 2024-08-05T16:05:34.019Z
Updated: 2024-08-05T17:36:02.731Z

Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to overwrite a guest's UMC seed potentially allowing reading of memory from a decommissioned guest.

Published: 2024-08-05T16:04:24.813Z
Updated: 2024-08-06T14:58:40.899Z

Due to a code bug in Secure_TSC, SEV firmware may allow an attacker with high privileges to cause a guest to observe an incorrect TSC when Secure TSC is enabled potentially resulting in a loss of guest integrity.  

Published: 2024-02-13T19:18:51.045Z
Updated: 2025-03-17T17:46:05.955Z

Failure to initialize memory in SEV Firmware may allow a privileged attacker to access stale data from other guests.

Published: 2024-02-13T19:18:19.089Z
Updated: 2025-03-20T20:27:50.012Z

Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via local access.

Published: 2023-09-20T17:27:59.742Z
Updated: 2025-06-27T21:41:58.197Z

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.

Published: 2023-11-14T18:54:13.255Z
Updated: 2024-10-11T18:07:49.421Z

Improper re-initialization of IOMMU during the DRTM event may permit an untrusted platform configuration to persist, allowing an attacker to read or modify hypervisor memory, potentially resulting in loss of confidentiality, integrity, and availability.

Published: 2024-08-13T16:53:23.681Z
Updated: 2025-03-13T16:41:15.645Z

IOMMU improperly handles certain special address ranges with invalid device table entries (DTEs), which may allow an attacker with privileges and a compromised Hypervisor to induce DTE faults to bypass RMP checks in SEV-SNP, potentially leading to a loss of guest integrity.

Published: 2024-08-13T16:53:18.373Z
Updated: 2024-11-05T21:40:37.392Z

A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow an attacker with ring0 privileges and access to the BIOS menu or UEFI shell to modify the communications buffer potentially resulting in arbitrary code execution.

Published: 2024-08-13T16:52:58.457Z
Updated: 2025-03-18T20:03:43.905Z

A potential power side-channel vulnerability in some AMD processors may allow an authenticated attacker to use the power reporting functionality to monitor a program’s execution inside an AMD SEV VM potentially resulting in a leak of sensitive information.

Published: 2023-07-11T18:29:02.607Z
Updated: 2024-11-27T16:01:14.610Z

A privileged attacker can prevent delivery of debug exceptions to SEV-SNP guests potentially resulting in guests not receiving expected debug information.

Published: 2024-01-11T13:53:52.581Z
Updated: 2025-06-20T16:12:15.413Z

A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled address, potentially leading to information disclosure.

Published: 2023-08-08T17:02:11.318Z
Updated: 2024-09-23T03:18:32.598Z

Improper address validation in ASP with SNP enabled may potentially allow an attacker to compromise guest memory integrity.

Published: 2023-11-14T18:54:00.908Z
Updated: 2024-12-03T14:26:45.381Z

Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in denial-of-service.

Published: 2023-11-14T18:52:52.106Z
Updated: 2024-08-02T09:05:36.915Z

Insufficient input validation in the SMU may allow an attacker to improperly lock resources, potentially resulting in a denial of service.

Published: 2023-01-10T20:57:08.762Z
Updated: 2025-04-07T18:33:14.880Z

Insufficient bound checks in the SMU may allow an attacker to update the SRAM from/to address space to an invalid value potentially resulting in a denial of service.

Published: 2023-01-10T20:57:07.471Z
Updated: 2025-04-07T18:33:55.600Z

Insufficient input validation of BIOS mailbox messages in SMU may result in out-of-bounds memory reads potentially resulting in a denial of service.

Published: 2023-01-10T20:57:06.132Z
Updated: 2025-04-07T18:34:30.136Z

Insufficient bound checks in the SMU may allow an attacker to update the from/to address space to an invalid value potentially resulting in a denial of service.

Published: 2023-01-10T20:57:04.799Z
Updated: 2025-04-07T18:34:54.131Z

Insufficient input validation in the SMU may allow a physical attacker to exfiltrate SMU memory contents over the I2C bus potentially leading to a loss of confidentiality.

Published: 2023-01-10T20:57:03.392Z
Updated: 2025-04-07T18:35:25.086Z

Improper syscall input validation in the ASP Bootloader may allow a privileged attacker to read memory out-of-bounds, potentially leading to a denial-of-service.

Published: 2023-01-10T20:57:02.034Z
Updated: 2025-04-07T15:47:00.818Z

Insufficient input validation in the ASP Bootloader may enable a privileged attacker with physical access to expose the contents of ASP memory potentially leading to a loss of confidentiality.

Published: 2023-11-14T18:52:41.992Z
Updated: 2024-08-02T09:05:36.942Z

Insufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to read memory outside the bounds of a mapped register potentially leading to a denial of service.

Published: 2023-01-10T20:57:00.713Z
Updated: 2025-04-07T15:47:21.531Z

An attacker with a compromised ASP could possibly send malformed commands to an ASP on another CPU, resulting in an out of bounds write, potentially leading to a loss a loss of integrity.

Published: 2023-05-09T18:36:29.876Z
Updated: 2025-01-28T15:51:34.268Z

TOCTOU in the ASP may allow a physical attacker to write beyond the buffer bounds, potentially leading to a loss of integrity or denial of service.

Published: 2023-01-10T20:56:59.383Z
Updated: 2025-04-07T15:47:41.028Z

TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, potentially leading to loss of confidentiality or a denial of service.

Published: 2023-11-14T18:52:31.662Z
Updated: 2024-08-02T09:05:36.873Z

Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code execution.

Published: 2023-05-09T18:36:29.141Z
Updated: 2025-01-28T15:54:22.503Z

SMM configuration may not be immutable, as intended, when SNP is enabled resulting in a potential limited loss of guest memory integrity.

Published: 2023-11-14T18:53:28.408Z
Updated: 2024-08-03T03:51:45.987Z

IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information disclosure.

Published: 2022-11-09T20:48:06.826Z
Updated: 2025-02-13T16:32:23.589Z

Insufficient input validation on the model specific register: VM_HSAVE_PA may potentially lead to loss of SEV-SNP guest memory integrity.

Published: 2023-05-09T18:36:28.387Z
Updated: 2025-01-28T15:55:54.421Z

Improper input validation in ABL may enable an attacker with physical access, to perform arbitrary memory overwrites, potentially leading to a loss of integrity and code execution.

Published: 2023-05-09T18:36:26.852Z
Updated: 2025-01-28T15:56:51.087Z

Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in denial-of-service.

Published: 2023-11-14T18:52:11.012Z
Updated: 2024-10-11T18:07:59.642Z

Insufficient validation of addresses in AMD Secure Processor (ASP) firmware system call may potentially lead to arbitrary code execution by a compromised user application.

Published: 2022-05-10T18:30:03.257Z
Updated: 2024-09-17T04:09:13.761Z

Insufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to execute arbitrary DMA copies, which can lead to code execution.

Published: 2023-05-09T18:36:25.695Z
Updated: 2025-01-28T15:57:52.765Z

Improper validation of DRAM addresses in SMU may allow an attacker to overwrite sensitive memory locations within the ASP potentially resulting in a denial of service.

Published: 2023-05-09T18:36:24.562Z
Updated: 2025-01-28T15:59:14.778Z

Insufficient input validation in the SMU may enable a privileged attacker to write beyond the intended bounds of a shared memory buffer potentially leading to a loss of integrity.

Published: 2023-05-09T18:36:23.834Z
Updated: 2025-01-28T16:00:03.817Z

Insufficient input validation in the SMU may allow an attacker to corrupt SMU SRAM potentially leading to a loss of integrity or denial of service.

Published: 2023-05-09T18:36:23.081Z
Updated: 2025-01-28T16:00:40.217Z

Insufficient validation of inputs in SVC_MAP_USER_STACK in the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious Uapp or ABL to send malformed or invalid syscall to the bootloader resulting in a potential denial of service and loss of integrity.

Published: 2023-05-09T19:00:35.599Z
Updated: 2025-01-28T15:38:19.211Z

Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.

Published: 2023-01-10T20:56:44.456Z
Updated: 2025-04-08T20:22:33.575Z

Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an attacker to write partially-controlled data out-of-bounds to SMM or SEV-ES regions which may lead to a potential loss of integrity and availability.

Published: 2023-01-10T20:56:41.784Z
Updated: 2025-04-08T20:27:13.237Z

Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an attacker to corrupt ASP (AMD Secure Processor) OS memory which may lead to potential arbitrary code execution.

Published: 2023-01-10T20:56:40.452Z
Updated: 2025-04-09T14:38:06.009Z

Insufficient address validation, may allow an attacker with a compromised ABL and UApp to corrupt sensitive memory locations potentially resulting in a loss of integrity or availability.

Published: 2023-05-09T18:36:19.135Z
Updated: 2025-01-28T16:01:49.226Z

Insufficient validation of address mapping to IO in ASP (AMD Secure Processor) may result in a loss of memory integrity in the SNP guest.

Published: 2023-01-10T20:56:39.130Z
Updated: 2025-04-09T14:54:52.802Z

Improper validation of the BIOS directory may allow for searches to read beyond the directory table copy in RAM, exposing out of bounds memory contents, resulting in a potential denial of service.

Published: 2022-05-11T16:29:06.174Z
Updated: 2024-09-16T23:01:19.603Z

Insufficient input validation of mailbox data in the SMU may allow an attacker to coerce the SMU to corrupt SMRAM, potentially leading to a loss of integrity and privilege escalation.

Published: 2023-05-09T18:36:18.303Z
Updated: 2025-01-28T16:02:38.949Z

Insufficient bound checks in the System Management Unit (SMU) may result in access to an invalid address space that could result in denial of service.

Published: 2022-05-11T16:23:26.758Z
Updated: 2024-09-16T20:22:35.208Z

Insufficient checks in System Management Unit (SMU) FeatureConfig may result in reenabling features potentially resulting in denial of resources and/or denial of service.

Published: 2022-05-11T16:28:09.769Z
Updated: 2024-09-16T17:58:27.535Z

Insufficient General Purpose IO (GPIO) bounds check in System Management Unit (SMU) may result in access/updates from/to invalid address space that could result in denial of service.

Published: 2022-05-11T16:20:03.207Z
Updated: 2024-09-17T03:43:15.285Z

Insufficient bound checks in the System Management Unit (SMU) may result in a system voltage malfunction that could result in denial of resources and/or possibly denial of service.

Published: 2022-05-11T16:27:13.373Z
Updated: 2024-09-16T16:32:39.034Z

Insufficient bound checks related to PCIE in the System Management Unit (SMU) may result in access to an invalid address space that could result in denial of service.

Published: 2022-05-11T16:18:58.798Z
Updated: 2024-09-16T19:15:19.878Z

A compromised or malicious ABL or UApp could send a SHA256 system call to the bootloader, which may result in exposure of ASP memory to userspace, potentially leading to information disclosure.

Published: 2023-05-09T18:59:16.122Z
Updated: 2025-01-28T15:46:02.389Z

Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_ATTRIB in a malicious UApp or ABL may allow an attacker to overwrite arbitrary bootloader memory with SPI ROM contents resulting in a loss of integrity and availability.

Published: 2022-05-10T18:25:17.618Z
Updated: 2024-09-16T22:20:14.838Z

Insufficient bounds checking in an SMU mailbox register could allow an attacker to potentially read outside of the SRAM address range which could result in an exception handling leading to a potential denial of service.

Published: 2022-05-11T16:25:26.746Z
Updated: 2024-09-16T20:42:13.106Z

A TOCTOU in ASP bootloader may allow an attacker to tamper with the SPI ROM following data read to memory potentially resulting in S3 data corruption and information disclosure.

Published: 2023-05-09T18:58:48.108Z
Updated: 2025-01-28T15:48:38.470Z

Insufficient fencing and checks in System Management Unit (SMU) may result in access to invalid message port registers that could result in a potential denial-of-service.

Published: 2023-01-10T20:56:37.810Z
Updated: 2025-04-09T14:56:35.656Z

Insufficient bounds checking in ASP may allow an attacker to issue a system call from a compromised ABL which may cause arbitrary memory values to be initialized to zero, potentially leading to a loss of integrity.

Published: 2023-05-09T18:58:37.664Z
Updated: 2025-01-28T15:50:35.057Z

Failure to validate inputs in SMM may allow an attacker to create a mishandled error leaving the DRTM UApp in a partially initialized state potentially resulting in loss of memory integrity.

Published: 2022-05-10T18:33:42.470Z
Updated: 2024-08-03T20:26:24.535Z

A TOCTOU race condition in SMU may allow for the caller to obtain and manipulate the address of a message port register which may result in a potential denial of service.

Published: 2022-05-11T16:16:40.882Z
Updated: 2024-09-16T21:07:55.195Z

Failure to assign a new report ID to an imported guest may potentially result in an SEV-SNP guest VM being tricked into trusting a dishonest Migration Agent (MA).

Published: 2022-05-11T16:24:22.957Z
Updated: 2024-09-17T01:05:40.403Z

Failure to flush the Translation Lookaside Buffer (TLB) of the I/O memory management unit (IOMMU) may lead an IO device to write to memory it should not be able to access, resulting in a potential loss of integrity.

Published: 2022-05-11T16:26:16.451Z
Updated: 2024-09-16T16:27:57.232Z

Failure to validate the integer operand in ASP (AMD Secure Processor) bootloader may allow an attacker to introduce an integer overflow in the L2 directory table in SPI flash resulting in a potential denial of service.

Published: 2022-05-11T16:22:09.774Z
Updated: 2024-08-03T20:26:25.052Z

Failure to validate the value in APCB may allow a privileged attacker to tamper with the APCB token to force an out-of-bounds memory read potentially resulting in a denial of service.

Published: 2023-11-14T18:53:20.979Z
Updated: 2024-08-03T20:26:24.909Z

An out of bounds memory write when processing the AMD PSP1 Configuration Block (APCB) could allow an attacker with access the ability to modify the BIOS image, and the ability to sign the resulting image, to potentially modify the APCB block resulting in arbitrary code execution.

Published: 2024-08-13T16:49:52.889Z
Updated: 2025-03-18T15:35:45.232Z

Insufficient validation in ASP BIOS and DRTM commands may allow malicious supervisor x86 software to disclose the contents of sensitive memory which may result in information disclosure.

Published: 2023-01-10T20:56:34.870Z
Updated: 2025-04-09T13:25:42.403Z

In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) following a particular sequence of operations that includes creation of a new virtual machine control block (VMCB). The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for disclosure of SEV guest memory contents. Users of SEV-ES/SEV-SNP guest VMs are not impacted by this vulnerability.

Published: 2022-05-11T16:21:04.403Z
Updated: 2024-09-16T16:32:42.078Z

A bug in AMD CPU’s core logic may allow for an attacker, using specific code from an unprivileged VM, to trigger a CPU core hang resulting in a potential denial of service. AMD believes the specific code includes a specific x86 instruction sequence that would not be generated by compilers.

Published: 2022-05-11T16:18:02.079Z
Updated: 2024-09-17T01:56:55.986Z

Failure to verify SEV-ES TMR is not in MMIO space, SEV-ES FW could result in a potential loss of integrity or availability.

Published: 2022-05-10T18:26:52.115Z
Updated: 2024-09-16T17:23:38.341Z

Failure to verify the mode of CPU execution at the time of SNP_INIT may lead to a potential loss of memory integrity for SNP guests.

Published: 2023-01-10T20:56:33.464Z
Updated: 2025-04-09T15:11:57.590Z

A bug with the SEV-ES TMR may lead to a potential loss of memory integrity for SNP-active VMs.

Published: 2022-05-10T18:27:30.491Z
Updated: 2024-09-16T17:54:12.083Z

Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in potential SMM (System Management Mode) arbitrary code execution.

Published: 2023-01-10T19:46:46.575Z
Updated: 2025-04-09T15:19:17.090Z