Ciphertext Side Channels on AMD SEV - Lenovo Support US

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CVE-2021-26347

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...

CVE-2021-26339

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...

CVE-2021-39298

A potential vulnerability in AMD System Management Mode SMM interrupt handler may allow an attacker with high privileges to access the SMM resulting in arbitrary code execution which could be used by malicious actors to bypass security mechanisms provided in the UEFI firmware...

CVE-2021-46771

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

CVE-2021-46771

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

AMD Gave Google Cloud Rare Access to Its Tech to Hunt Chip Flaws

By working together, the companies say they’re better able to find security flaws in Google Cloud’s Confidential Computing infrastructure...

CVE-2021-46771

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

CVE-2021-46771

CVE-2021-46771 : The AMD Secure Processor (ASP) firmware system call has insufficient validation of addresses, potentially allowing arbitrary code execution by a compromised user application. This is tied to the ASP/firmware boundary and could impact systems relying on ASP for secure processing. ...

kernel: iommu/amd: Fix I/O page table memory leak

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix I/O page table memory leak The current logic updates the I/O page table mode for the domain before calling the logic to free memory used for the page table. This results in IOMMU page table memory leak, and can be...

hw: cpu: LFENCE/JMP Mitigation Update for CVE-2017-5715

A flaw was found in hw. The speculative execution window of AMD LFENCE/JMP mitigation MITIGATION V2-2 may be large enough to be exploited on AMD CPUs...

AMD Client UEFI Firmware May 2022 Security Updates

AMD has informed HP of potential vulnerabilities identified in AMD client platform firmware components, which might allow arbitrary code execution, denial of service, and/or information disclosure. AMD is releasing firmware updates to mitigate these vulnerabilities. AMD has released updates to...

Ciphertext Side Channels on AMD SEV

Bulletin ID: AMD-SB-1033 Potential Impact: Data leakage Severity: Medium Summary AMD received notification of a potential security vulnerability where data in specific cryptographic algorithms can be inferred in a SEV guest by monitoring the ciphertext values over time. Researchers from the...

Speculative Load Disordering

Bulletin ID: AMD-SB-1035 Potential Impact: Data Leakage Severity: Low Summary AMD processors may speculatively re-order load instructions which can result in stale data being observed when multiple processors are operating on shared memory, resulting in potential data leakage. CVE Details...

AMD EPYC UApp/ABL 输入验证错误漏洞

AMD EPYC is an x86 server microprocessor product line from AMD, known as "Xiao Long" in Chinese, utilizing the Zen microarchitecture. A security vulnerability exists in AMD EPYC UApp/ABL, which stems from improper validation of the target address in SVCLOADFWIMAGEBYINSTANCE and...

AMD Client Vulnerabilities – May 2022

Bulletin ID: AMD-SB-1027 Potential Impact: Varies by CVE, see descriptions below Severity: Varies by CVE, see descriptions below Summary During security reviews in collaboration with Google, Microsoft, and Oracle, potential vulnerabilities in the AMD Secure Processor ASP, AMD System Management Un...

PT-2022-6302 · Amd · System Management Mode

Name of the Vulnerable Software and Affected Versions: System Management Mode SMM affected versions not specified Description: The issue is related to the failure to validate inputs in SMM, which may allow an attacker to create a mishandled error, leaving the DRTM UApp in a partially initialized...

Release of Technical Report into the AMD Security Processor

Posted by James Forshaw, Google Project Zero Today, members of Project Zero and the Google Cloud security team are releasing a technical report on a security review of AMD Secure Processor ASP. The ASP is an isolated ARM processor in AMD EPYC CPUs that adds a root of trust and controls secure...

AMD Server Vulnerabilities - May 2022

Bulletin ID: AMD-SB-1028 Potential Impact: Varies by CVE, see descriptions below Severity: Varies by CVE, see descriptions below Summary During security reviews in collaboration with Google, Microsoft, and Oracle, potential vulnerabilities in the AMD Secure Processor ASP, AMD System Management Un...

Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2022-011 (ALASKERNEL-5.10-2022-011)

The version of kernel installed on the remote host is prior to 5.10.102-99.473. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2022-011 advisory. AMD recommends using a software mitigation for this issue, which the kernel is enabling by default. The...