EUVD-2026-25485

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Protect all of sevmemencregisterregion with kvm-lock Take and hold kvm-lock for before checking sevguest in sevmemencregisterregion, as sevguest isn't stable unless kvm-lock is held or KVM can guarantee KVMSEVINIT2 has...

CVE-2026-31591 KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish Lock all vCPUs when synchronizing and encrypting VMSAs for SNP guests, as allowing userspace to manipulate and/or run a vCPU while its state is being...

EUVD-2026-25484

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish Lock all vCPUs when synchronizing and encrypting VMSAs for SNP guests, as allowing userspace to manipulate and/or run a vCPU while its state is being...

EUVD-2026-25454

In the Linux kernel, the following vulnerability has been resolved: x86/cpu: Remove X86CR4FRED from the CR4 pinned bits mask Commit in Fixes added the FRED CR4 bit to the CR4 pinned bits mask so that whenever something else modifies CR4, that bit remains set. Which in itself is a perfectly fine...

CVE-2026-31561 x86/cpu: Remove X86_CR4_FRED from the CR4 pinned bits mask

In the Linux kernel, the following vulnerability has been resolved: x86/cpu: Remove X86CR4FRED from the CR4 pinned bits mask Commit in Fixes added the FRED CR4 bit to the CR4 pinned bits mask so that whenever something else modifies CR4, that bit remains set. Which in itself is a perfectly fine...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the sevpinmemory function in KVM SEV, where the int type’s pages parameter is not properly...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the sevmemencregisterregion function in KVM SEV. When this function checks sevguest, it does not hold...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010854)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010854 advisory. In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Use kzalloc for sev ioctl interfaces to prevent kernel data leak For some sev ioctl...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013285)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013285 advisory. A flaw was found in the KVM's AMD code for supporting the Secure Encrypted Virtualization-Encrypted State SEV-ES. A KVM guest using SEV-ES can trigger out-of-bounds...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013323)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013323 advisory. In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Use onlinevcpus, not createdvcpus, to iterate over vCPUs Use the kvmforeachvcpu helper ...

PoC

Fabricked: Breaking AMD SEV-SNP via Infinity Fabric !CVE-20...

PT-2026-34945

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM component regarding SEV Secure Encrypted Virtualization. The system fails to reject attempts to synchronize the vCPU state to its associated VMSA Virtual Machi...

SEV microprogramming software components

The vulnerability of the SEV microprogramming software for AMD graphics processors is related to improper prevention of bit modification of the lock bits. Exploiting this vulnerability can allow an attacker to compromise the integrity of the protected information...

Secure Encrypted Virtualization SEV Data Compromise

The vulnerability of the Secure Encrypted Virtualization SEV technology of AMD microprocessors is related to deficiencies in access control. Exploiting this vulnerability could allow attackers to compromise the confidentiality of the protected information...

Secure Encrypted Virtualization SEV Data Compromise

The vulnerability of the Secure Encrypted Virtualization SEV technology of AMD microprocessors is related to deficiencies in access control. Exploiting this vulnerability could allow attackers to compromise the confidentiality of the protected information...

PT-2026-20212

URGENT: Ubuntu 24.04 LTS kernel updates USN-8028-3 are live. Critical patches for AMD CPU data leaks CVE-2024-36351 and SEV-SNP guest memory overwrite flaws. Read more: 👉 https://t.co/ChC0mzFiGU Security https://t.co/LSj2IFaKnN...

Control Flow Reconstruction using HPCs

Affected Products and Mitigation Performance counters are not protected by Secure Encrypted Virtualization SEV, SEV-ES, or SEV-SNP. AMD has defined support for performance counter virtualization in APM Vol 2, section 15.39. Performance Monitoring Counters PMC virtualization, available on AMD...

CVE-2025-52536

Improper Prevention of Lock Bit Modification in SEV firmware could allow a privileged attacker to downgrade firmware potentially resulting in a loss of integrity...

CVE-2025-29939

Improper access control in secure encrypted virtualization SEV could allow a privileged attacker to write to the reverse map page RMP during secure nested paging SNP initialization, potentially resulting in a loss of guest memory confidentiality and integrity...

CVE-2025-29948

Improper access control in AMD Secure Encrypted Virtualization SEV firmware could allow a malicious hypervisor to bypass RMP protections, potentially resulting in a loss of SEV-SNP guest memory integrity...