PT-2026-61255

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM SEV component when processing Page State Change PSC requests. The system fails to properly validate the PSC buffer against the effective size of the scratch...

PT-2026-61256

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM SEV implementation regarding the calculation of the maximum length of the in-GHCB scratch area. When the scratch area is located within the GHCB shared buffer,...

CVE-2026-53360

A flaw was found in the Linux kernel's KVM Kernel-based Virtual Machine subsystem, specifically within the SEV Secure Encrypted Virtualization feature. A malicious guest operating system utilizing SEV-SNP Secure Nested Paging can exploit an out-of-bounds write vulnerability due to improper...

UBUNTU-CVE-2026-53360

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use As per the GHCB spec, when using GHCB v2+ require the software scratch area to reside in the GHCB's shared buffer. Note, things like Page State Change PSC requests rely...

CVE-2026-53360

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use As per the GHCB spec, when using GHCB v2+ require the software scratch area to reside in the GHCB's shared buffer. Note, things like Page State Change PSC requests rely...

CVE-2026-53360

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use As per the GHCB spec, when using GHCB v2+ require the software scratch area to reside in the GHCB's shared buffer. Note, things like Page State Change PSC requests rely...

CVE-2026-53360 KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use As per the GHCB spec, when using GHCB v2+ require the software scratch area to reside in the GHCB's shared buffer. Note, things like Page State Change PSC requests rely...

CVE-2026-53345

In the Linux kernel, the following vulnerability has been resolved: KVM: Don't WARN if memory is dirtied without a vCPU when the VM is dying When marking a page dirty, complain about not having a running/loaded vCPU if and only if the VM is still alive, i.e. its refcount is non-zero. This will...

CVE-2026-53345

In the Linux kernel, the following vulnerability has been resolved: KVM: Don't WARN if memory is dirtied without a vCPU when the VM is dying When marking a page dirty, complain about not having a running/loaded vCPU if and only if the VM is still alive, i.e. its refcount is non-zero. This will...

CVE-2026-53345 KVM: Don't WARN if memory is dirtied without a vCPU when the VM is dying

In the Linux kernel, the following vulnerability has been resolved: KVM: Don't WARN if memory is dirtied without a vCPU when the VM is dying When marking a page dirty, complain about not having a running/loaded vCPU if and only if the VM is still alive, i.e. its refcount is non-zero. This will...

CVE-2026-52959

A flaw was found in the Linux kernel's Secure Encrypted Virtualization SEV guest module. This vulnerability allows a malicious host to provide an invalid buffer size during an extended guest request. This incorrect handling of host-controlled page order during the cleanup process can lead to a...

Astra Linux – Vulnerability in amd64-microcode

Secure Encrypted Virtualization SEV on the Advanced Micro Devices AMD Platform Security Processor PSP; also known as AMD Secure Processor or AMD-SP 0.17 build 11 and earlier has an insecure cryptographic implementation...

Formal Verification of Secure Encrypted Virtualization

Trusted execution environments TEEs provide a secure environment for data and code in use, ensuring that they are protected with respect to confidentiality and integrity. Virtual machine VM-based TEEs utilize virtualization technology to create isolated execution spaces that can support a complet...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: x86/ioremap: Maps EFI-reserved memory as encrypted for SEV. Some drivers require memory that is marked as EFI boot services data. To prevent this memory from being reused by the kernel after ExitBootServices, efimemreserve is use...

Astra Linux – Vulnerability in Linux 5.10

A flaw was discovered in the Linux kernel. The existing KVM SEV API contains a vulnerability that allows a non-root host user-level application to crash the host kernel by creating a confidential guest VM instance in an AMD CPU that supports Secure Encrypted Virtualization SEV...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Handle protected guests properly in completehypercallexit Use is64bithypercall instead of is64bitmode to detect a 64-bit hypercall when completing said hypercall. For guests with protected state, e.g., SEV-ES and SEV-SN...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: KVM: SEV: Rejects attempts to synchronize VMSA of a vCPU that has already been launched/encrypted. Synchronize the vCPU state with its associated VMSA if the vCPU has already been launched, i.e., if the VMSA has already been...

[SECURITY] Fedora 44 Update: rust-sevctl-0.6.2-7.fc44

Administrative utility for AMD SEV...

CVE-2025-61972

Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to gain arbitrary System Management Network SMN access, potentially resulting in arbitrary code execution in AMD Secure Processor ASP and loss of the SEV-SNP guest's confidentiality and integrity...

CVE-2025-61971

Missing lock bit protection for NBIO registers could allow a local admin-privileged attacker to modify MMIO routing configurations, potentially resulting in loss of SEV-SNP guest integrity...