kernel: KVM: x86: nSVM: fix potential NULL derefernce on nested migration

A vulnerability was found in the nested.c file in the Linux kernel's KVM driver, where a potential NULL dereference can occur. This happens when the call to load the nested state is executed before Nested Page Tables NPT are enabled, preventing access to guest memory, lead to system instability a...

SUSE CVE-2023-31356

Incomplete system memory cleanup in SEV firmware could allow a privileged attacker to corrupt guest private memory, potentially resulting in a loss of data integrity...

DEBIAN-CVE-2023-31356

Incomplete system memory cleanup in SEV firmware could allow a privileged attacker to corrupt guest private memory, potentially resulting in a loss of data integrity...

UBUNTU-CVE-2023-31356

Incomplete system memory cleanup in SEV firmware could allow a privileged attacker to corrupt guest private memory, potentially resulting in a loss of data integrity...

CVE-2023-31356

Incomplete system memory cleanup in SEV firmware could allow a privileged attacker to corrupt guest private memory, potentially resulting in a loss of data integrity...

FreeBSD : AMD CPUs -- Guest Memory Vulnerabilities (7d631146-5769-11ef-b618-1c697a616631)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 7d631146-5769-11ef-b618-1c697a616631 advisory. AMD reports: Researchers from IOActive have reported that it may be possible for an attacker with ring ...

CVE-2024-21980

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...

CVE-2024-21978

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...

CVE-2024-21978

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...

CVE-2024-21980

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...

CVE-2024-21978

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...

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...

PT-2024-12279 · Unknown +1 · Scp-Firmware +1

Name of the Vulnerable Software and Affected Versions: No specific software or versions are mentioned in the provided descriptions. Description: The issue involves improper restriction of write operations in SNP firmware. This could allow a malicious hypervisor to overwrite a guest's UMC seed,...

PT-2024-19133 · Amd +1 · Sev-Snp +1

Name of the Vulnerable Software and Affected Versions: SEV-SNP affected versions not specified Description: The issue is related to improper input validation in SEV-SNP, which could allow a malicious hypervisor to read or overwrite guest memory. This could potentially lead to data leakage or data...

AMD SEV-SNP 安全漏洞

AMD SEV-SNP is a secure encrypted virtualization firmware from UltraMicroelectronics AMD. A single key is used to encrypt system memory. AMD SEV-SNP suffers from a security vulnerability that stems from an improper restriction on write operations causing a malicious hypervisor to overwrite the...

AMD SEV-SNP 安全漏洞

AMD SEV-SNP is a secure encrypted virtualization firmware from UltraMicroelectronics AMD. A single key is used to encrypt system memory. AMD SEV-SNP suffers from a security vulnerability that stems from an improper restriction of write operations allowing a malicious hypervisor to potentially...

PT-2024-19135 · Amd +1 · Amd Epyc Embedded 9003 Snp Firmware +1

Name of the Vulnerable Software and Affected Versions: AMD EPYC Embedded 9003 SNP Firmware affected versions not specified Description: The issue is related to improper restriction of write operations in SNP firmware, which could allow a malicious hypervisor to potentially overwrite a guest's...

CVE-2022-48793 KVM: x86: nSVM: fix potential NULL derefernce on nested migration

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: nSVM: fix potential NULL derefernce on nested migration Turns out that due to review feedback and/or rebases I accidentally moved the call to nestedsvmloadcr3 to be too early, before the NPT is enabled, which is very...

SUSE CVE-2021-47277

In the Linux kernel, the following vulnerability has been resolved: kvm: avoid speculation-based attacks from out-of-range memslot accesses KVM's mechanism for accessing guest memory translates a guest physical address gpa to a host virtual address using the right-shifted gpa also known as gfn an...

hw: amd: INVD instruction may lead to a loss of SEV-ES guest machine memory integrity problem

A flaw was found in some of AMD CPU's due to improper or unexpected behavior of the INVD. This issue may allow an attacker with a malicious hypervisor to affect cache line write-back behavior of the CPU, potentially leading to a loss of guest virtual machine VM memory integrity...