UBUNTU-CVE-2026-64287

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Bound usedlrs when flushing the pKVM hyp vCPU flushhypvcpu copies the host vGIC state into the hyp's private vCPU on every run. The vGIC list register save and restore use usedlrs as their loop bound and expect it to...

UBUNTU-CVE-2026-64286

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Clear hyprunningvcpu when flushing the pKVM hyp vCPU flushhypvcpu copies the host vCPU context into the hyp's private vCPU on every run. ctxttovcpu expects a guest context to have a NULL hyprunningvcpu, which is only...

CVE-2026-64287 KVM: arm64: Bound used_lrs when flushing the pKVM hyp vCPU

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Bound usedlrs when flushing the pKVM hyp vCPU flushhypvcpu copies the host vGIC state into the hyp's private vCPU on every run. The vGIC list register save and restore use usedlrs as their loop bound and expect it to...

CVE-2026-64287

CVE-2026-64287 affects the Linux kernel’s KVM on arm64. The issue stems from flush_hyp_vcpu() copying host vgic_v3 state to the hyp’s vCPU and not enforcing the expected bound on list registers, which can lead to out-of-bounds access to ICH_LR_EL2 when host values exceed the number of implemented...

CVE-2026-64287 KVM: arm64: Bound used_lrs when flushing the pKVM hyp vCPU

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Bound usedlrs when flushing the pKVM hyp vCPU flushhypvcpu copies the host vGIC state into the hyp's private vCPU on every run. The vGIC list register save and restore use usedlrs as their loop bound and expect it to...

CVE-2026-64287

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Bound usedlrs when flushing the pKVM hyp vCPU flushhypvcpu copies the host vGIC state into the hyp's private vCPU on every run. The vGIC list register save and restore use usedlrs as their loop bound and expect it to...

EUVD-2026-48999

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Bound usedlrs when flushing the pKVM hyp vCPU flushhypvcpu copies the host vGIC state into the hyp's private vCPU on every run. The vGIC list register save and restore use usedlrs as their loop bound and expect it to...

CVE-2026-64286

CVE-2026-64286 affects the Linux kernel’s KVM on arm64. The vulnerability arises in flush_hyp_vcpu(): it copies the host vCPU context into the hyp private vCPU on every run. The guest-context resolver (ctxt_to_vcpu()) expects a NULL __hyp_running_vcpu (only set on the host); since the host’s valu...

CVE-2026-64286 KVM: arm64: Clear __hyp_running_vcpu when flushing the pKVM hyp vCPU

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Clear hyprunningvcpu when flushing the pKVM hyp vCPU flushhypvcpu copies the host vCPU context into the hyp's private vCPU on every run. ctxttovcpu expects a guest context to have a NULL hyprunningvcpu, which is only...

CVE-2026-64286

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Clear hyprunningvcpu when flushing the pKVM hyp vCPU flushhypvcpu copies the host vCPU context into the hyp's private vCPU on every run. ctxttovcpu expects a guest context to have a NULL hyprunningvcpu, which is only...

EUVD-2026-48998

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Clear hyprunningvcpu when flushing the pKVM hyp vCPU flushhypvcpu copies the host vCPU context into the hyp's private vCPU on every run. ctxttovcpu expects a guest context to have a NULL hyprunningvcpu, which is only...

PT-2026-64507

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM arm64 implementation where the flush hyp vcpu function copies the host vCPU context into the hyp's private vCPU during every run. Because the ctxt to vcpu...

USN-8604-1 linux-azure-6.17 vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Foo-over-UDP FOU; - ARM64 architecture; - x86 architecture; - Block layer subsystem; - Cryptographic API; - Drivers...

USN-8604-1: Linux kernel (Azure) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Foo-over-UDP FOU; - ARM64 architecture; - x86 architecture; - Block layer subsystem; - Cryptographic API; - Drivers...

Security Bulletin: This Power System update is being released to address CVE-2026-4932

Summary A firmware issue was identified where the generated AES key used to initialize the Transparent Memory Encryption TME hardware has weakened encryption strength. Vulnerability Details CVEID:CVE-2026-4932 DESCRIPTION: PowerVM Hypervisor could allow an attacker with physical access to the...

Security Bulletin: This Power System update is being released to address CVE-2026-11885

Summary A carefully crafted OS hypervisor call can cause the PowerVM hypervisor to crash or compromise system or OS memory integrity. Vulnerability Details CVEID:CVE-2026-11885 DESCRIPTION: A carefully crafted OS hypervisor call can cause the PowerVM hypervisor to crash or compromise OS memory...

EulerOS Virtualization 2.10.0 : kernel (EulerOS-SA-2026-2854)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : mrp: introduce active flags to prevent UAF when applicant uninitCVE-2022-50697 net: skbuff: propagate shared-frag marker through...

CVE-2026-64172

CVE-2026-64172 documents a Linux kernel/KVM vulnerability on Hygon Family 18h CPUs (Zen1-derived) where AVIC IPI virtualization could fail to wake blocking vCPUs due to a stale IsRunning=1 bit during ICR emulation. The root cause mirrors AMD Family 17h erratum #1235 and is mitigated by extending ...

CVE-2026-63939

CVE-2026-63939 (Linux kernel, KVM SEV): The issue concerns computation of the maximum length for the in-GHCB scratch area in the GHCB shared buffer. Previously, KVM assumed the input length (@len) always represented the maximum required size for MMIO emulation; for PSC requests, @len is only the ...

CVE-2026-63938

The vulnerability CVE-2026-63938 affects the Linux kernel KVM SEV path, specifically PSC processing. The issue arises when validating PSC requests: the PSC buffer must be checked against the effective size of the scratch area, which may be smaller than the maximum if a guest supplies a pointer no...