EUVD-2020-7554

Malware in sbrugna...

EUVD-2021-13215

Malware in sbrugna...

New $50 Battering RAM Attack Breaks Intel and AMD Cloud Security Protections

A group of academics from KU Leuven and the University of Birmingham has demonstrated a new vulnerability called Battering RAM to bypass the latest defenses on Intel and AMD cloud processors. "We built a simple, $50 interposer that sits quietly in the memory path, behaving transparently during...

CVE-2024-36331

Improper initialization of CPU cache memory could allow a privileged attacker with hypervisor access to overwrite SEV-SNP guest memory resulting in loss of data integrity...

CVE-2024-36331

Improper initialization of CPU cache memory could allow a privileged attacker with hypervisor access to overwrite SEV-SNP guest memory resulting in loss of data integrity...

x86/sev: Evict cache lines during SNP memory validation

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Linux Distros Unpatched Vulnerability : CVE-2024-36331

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Improper initialization of CPU cache memory could allow a privileged attacker with hypervisor access to overwrite SEV-SNP guest memory resulting in loss of data...

Linux Distros Unpatched Vulnerability : CVE-2020-15567

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in Xen through 4.13.x, allowing Intel guest OS users to gain privileges or cause a denial of service because of non-atomic modification ...

PT-2025-46738

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.16.0-rc7+ Description The Linux kernel contained a flaw related to memory mapping within KVM when running as a Secure Nested Paging SNP or Trusted Execution Technology TDX guest. Specifically, the legacy PCI...

CVE-2025-38560

In the Linux kernel, the following vulnerability has been resolved: x86/sev: Evict cache lines during SNP memory validation An SNP cache coherency vulnerability requires a cache line eviction mitigation when validating memory after a page state change to private. The specific mitigation is to tou...

CVE-2025-38560 x86/sev: Evict cache lines during SNP memory validation

In the Linux kernel, the following vulnerability has been resolved: x86/sev: Evict cache lines during SNP memory validation An SNP cache coherency vulnerability requires a cache line eviction mitigation when validating memory after a page state change to private. The specific mitigation is to tou...

CVE-2025-38560

In the Linux kernel, the following vulnerability has been resolved: x86/sev: Evict cache lines during SNP memory validation An SNP cache coherency vulnerability requires a cache line eviction mitigation when validating memory after a page state change to private. The specific mitigation is to tou...

CVE-2025-38506

In the Linux kernel, the following vulnerability has been resolved: KVM: Allow CPU to reschedule while setting per-page memory attributes When running an SEV-SNP guest with a sufficiently large amount of memory 1TB+, the host can experience CPU soft lockups when running an operation in...

CVE-2025-38508

In the Linux kernel, the following vulnerability has been resolved: x86/sev: Use TSCFACTOR for Secure TSC frequency calculation When using Secure TSC, the GUESTTSCFREQ MSR reports a frequency based on the nominal P0 frequency, which deviates slightly typically 0.2% from the actual mean TSC...

CVE-2025-38508

In the Linux kernel, the following vulnerability has been resolved: x86/sev: Use TSCFACTOR for Secure TSC frequency calculation When using Secure TSC, the GUESTTSCFREQ MSR reports a frequency based on the nominal P0 frequency, which deviates slightly typically 0.2% from the actual mean TSC...

CVE-2025-38506 KVM: Allow CPU to reschedule while setting per-page memory attributes

In the Linux kernel, the following vulnerability has been resolved: KVM: Allow CPU to reschedule while setting per-page memory attributes When running an SEV-SNP guest with a sufficiently large amount of memory 1TB+, the host can experience CPU soft lockups when running an operation in...

AMD Server Vulnerabilities – August 2025

Summary Potential vulnerabilities in AMD EPYC™ Processor platforms that affect IOMMU, AMD Secure Encrypted Virtualization – Secure Nested Paging SEV-SNP and other platform components, were found during audits performed internally and by third parties. Mitigations have been provided in AMD EPYC™...

SEV Ciphertext Side Channel Attacks

Summary AMD has received reports from two research groups detailing methods by which a malicious hypervisor could potentially execute a side channel attack against a running secure encrypted virtualization – secure nested paging SEV-SNP guest. The first report, titled “Relocate + Vote: Exploiting...

PT-2025-33759

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The Linux kernel contains a cache coherency vulnerability within the x86/sev subsystem related to Secure Nested Paging SNP memory validation. The issue requires cache line eviction...

PT-2025-33551

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The Linux kernel contains a flaw related to Secure TSC frequency calculation in SEV-SNP VMs. The GUEST TSC FREQ MSR reports a frequency based on the nominal P0 frequency, which deviate...