RLSA-2025:4492 Moderate: qemu-kvm security update

Kernel-based Virtual Machine KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Security Fixes: QEMU: virtio-net: stack buffer overflow in virtionetflushtx CVE-2023-6693...

qemu-kvm security update

An update is available for qemu-kvm. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Kernel-based Virtual Machine KVM is a full virtualization solution for Linux...

SUSE CVE-2025-38366

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Check validity of "numcpu" from user space The maximum supported cpu number is EIOINTCROUTEMAXVCPUS about irqchip EIOINTC, here add validation about cpu number to avoid array pointer overflow...

SUSE CVE-2025-38396

In the Linux kernel, the following vulnerability has been resolved: fs: export anoninodemakesecureinode and fix secretmem LSM bypass Export anoninodemakesecureinode to allow KVM guestmemfd to create anonymous inodes with proper security context. This replaces the current pattern of calling...

SUSE CVE-2025-38469

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls kvmxenschedoppoll does a kmallocarray when a VM polls the host for more than one event channel potr nrports 1. After the kmallocarray, the error paths ne...

CVE-2025-38469

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls kvmxenschedoppoll does a kmallocarray when a VM polls the host for more than one event channel potr nrports 1. After the kmallocarray, the error paths ne...

DEBIAN-CVE-2025-38469

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls kvmxenschedoppoll does a kmallocarray when a VM polls the host for more than one event channel potr nrports 1. After the kmallocarray, the error paths ne...

CVE-2025-38469 KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls kvmxenschedoppoll does a kmallocarray when a VM polls the host for more than one event channel potr nrports 1. After the kmallocarray, the error paths ne...

CVE-2025-38469

Technical details for CVE-2025-38469 are not publicly provided in the supplied documents; monitor for updates.

CVE-2025-38469 KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls kvmxenschedoppoll does a kmallocarray when a VM polls the host for more than one event channel potr nrports 1. After the kmallocarray, the error paths ne...

CVE-2025-38469

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls kvmxenschedoppoll does a kmallocarray when a VM polls the host for more than one event channel potr nrports 1. After the kmallocarray, the error paths ne...

CVE-2025-38455

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Reject SEV-ES intra host migration if vCPU creation is in-flight Reject migration of SEV-ES state if either the source or destination VM is actively creating a vCPU, i.e. if kvmvmioctlcreatevcpu is in the section betwee...

CVE-2025-38455 KVM: SVM: Reject SEV{-ES} intra host migration if vCPU creation is in-flight

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Reject SEV-ES intra host migration if vCPU creation is in-flight Reject migration of SEV-ES state if either the source or destination VM is actively creating a vCPU, i.e. if kvmvmioctlcreatevcpu is in the section betwee...

CVE-2025-38455

CVE-2025-38455: Linux kernel KVM-SEV-ES intra-host migration is rejected when vCPU creation is in-flight to prevent SEV-ES VM with non-SEV-ES vCPU. Root cause: vCPU creation runs largely outside kvm->lock, allowing sev_info.es_active to toggle during svm_vcpu_create(), causing issues when free...

CVE-2025-38455

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Reject SEV-ES intra host migration if vCPU creation is in-flight Reject migration of SEV-ES state if either the source or destination VM is actively creating a vCPU, i.e. if kvmvmioctlcreatevcpu is in the section betwee...

CVE-2025-38367

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Avoid overflow with array index The variable index is modified and reused as array index when modify register EIOINTCENABLE. There will be array index overflow problem...

UBUNTU-CVE-2025-38396

In the Linux kernel, the following vulnerability has been resolved: fs: export anoninodemakesecureinode and fix secretmem LSM bypass Export anoninodemakesecureinode to allow KVM guestmemfd to create anonymous inodes with proper security context. This replaces the current pattern of calling...

CVE-2025-38396 fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass

In the Linux kernel, the following vulnerability has been resolved: fs: export anoninodemakesecureinode and fix secretmem LSM bypass Export anoninodemakesecureinode to allow KVM guestmemfd to create anonymous inodes with proper security context. This replaces the current pattern of calling...

CVE-2025-38396

The CVE-2025-38396 entry concerns the Linux kernel vulnerability where anon_inode_make_secure_inode() is exported to allow KVM guest_memfd to create anonymous inodes with proper security context, fixing a secretmem LSM bypass. The issue involved the S_PRIVATE flag not being cleared after alloc_an...

CVE-2025-38396

In the Linux kernel, the following vulnerability has been resolved: fs: export anoninodemakesecureinode and fix secretmem LSM bypass Export anoninodemakesecureinode to allow KVM guestmemfd to create anonymous inodes with proper security context. This replaces the current pattern of calling...