ALSA-2023:5264 Important: virt:rhel and virt-devel:rhel security and bug fix update

Kernel-based Virtual Machine KVM offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the...

CLSA-2023-1695046791 Fix of 7 CVEs

Bionic update: upstream stable patchset 2022-12-01 LP: 1998542 // CVE-2022-26373 - x86/speculation: Add RSB VM Exit protections Bionic update: upstream stable patchset 2022-12-01 LP: 1998542 - Revert "x86/cpu: Add a steppings field to struct x86cpuid" - x86/cpufeature: Add facility to check for m...

CLSA-2023-1695041288 Fix of 8 CVEs

CVE-url: https://ubuntu.com/security/CVE-2023-4622 - afunix: Fix null-ptr-deref in unixstreamsendpage. Jammy update: v5.15.105 upstream stable release LP: 2023230 // CVE-url: https://ubuntu.com/security/CVE-2022-4269 - net/sched: actmirred: better wording on protection against excessive stack...

AlmaLinux 9 : qemu-kvm (ALSA-2023:5094)

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2023:5094 advisory. - A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certa...

CVE-2023-4155

A flaw was found in KVM AMD Secure Encrypted Virtualization SEV in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the VMGEXIT handler recursively. If an attacker manages to call the handler multiple time...

CVE-2023-4155

A flaw was found in KVM AMD Secure Encrypted Virtualization SEV in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the VMGEXIT handler recursively. If an attacker manages to call the handler multiple time...

CVE-2023-2680

This CVE exists because of an incomplete fix for CVE-2021-3750. More specifically, the qemu-kvm package as released for Red Hat Enterprise Linux 9.1 via RHSA-2022:7967 included a version of qemu-kvm that was actually missing the fix for CVE-2021-3750...

CVE-2023-2680

This CVE exists because of an incomplete fix for CVE-2021-3750. More specifically, the qemu-kvm package as released for Red Hat Enterprise Linux 9.1 via RHSA-2022:7967 included a version of qemu-kvm that was actually missing the fix for CVE-2021-3750...

Design/Logic Flaw

This CVE exists because of an incomplete fix for CVE-2021-3750. More specifically, the qemu-kvm package as released for Red Hat Enterprise Linux 9.1 via RHSA-2022:7967 included a version of qemu-kvm that was actually missing the fix for CVE-2021-3750...

Race condition

A flaw was found in KVM AMD Secure Encrypted Virtualization SEV in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the VMGEXIT handler recursively. If an attacker manages to call the handler multiple time...

CVE-2023-2680

This CVE exists because of an incomplete fix for CVE-2021-3750. More specifically, the qemu-kvm package as released for Red Hat Enterprise Linux 9.1 via RHSA-2022:7967 included a version of qemu-kvm that was actually missing the fix for CVE-2021-3750...

CVE-2023-2680

Mode C: CVE-2023-2680 arises from an incomplete fix for CVE-2021-3750 in qemu-kvm, specifically in the RHEL 9.1 package (RHSA-2022:7967). Astra/AlmaLinux advisories describe a DMA reentrancy issue in QEMU’s USB EHCI and NVMe/NVMEm device emulations that could cause use-after-free and host-denial ...

CVE-2023-2680 Dma reentrancy issue (incomplete fix for cve-2021-3750)

This CVE exists because of an incomplete fix for CVE-2021-3750. More specifically, the qemu-kvm package as released for Red Hat Enterprise Linux 9.1 via RHSA-2022:7967 included a version of qemu-kvm that was actually missing the fix for CVE-2021-3750...

CVE-2023-2680 Dma reentrancy issue (incomplete fix for cve-2021-3750)

This CVE exists because of an incomplete fix for CVE-2021-3750. More specifically, the qemu-kvm package as released for Red Hat Enterprise Linux 9.1 via RHSA-2022:7967 included a version of qemu-kvm that was actually missing the fix for CVE-2021-3750...

CVE-2023-2680

This CVE exists because of an incomplete fix for CVE-2021-3750. More specifically, the qemu-kvm package as released for Red Hat Enterprise Linux 9.1 via RHSA-2022:7967 included a version of qemu-kvm that was actually missing the fix for CVE-2021-3750...

CVE-2023-4155 Sev-es / sev-snp vmgexit double fetch vulnerability

A flaw was found in KVM AMD Secure Encrypted Virtualization SEV in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the VMGEXIT handler recursively. If an attacker manages to call the handler multiple time...

CVE-2023-4155 Sev-es / sev-snp vmgexit double fetch vulnerability

A flaw was found in KVM AMD Secure Encrypted Virtualization SEV in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the VMGEXIT handler recursively. If an attacker manages to call the handler multiple time...

CVE-2023-4155

CVE-2023-4155 describes a vulnerability in the Linux kernel’s KVM AMD SEV implementation. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race that causes the VMGEXIT handler to be invoked recursively. If the handler is called multiple times, this can lead to a ...

CVE-2023-4155

A flaw was found in KVM AMD Secure Encrypted Virtualization SEV in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the VMGEXIT handler recursively. If an attacker manages to call the handler multiple time...

qemu-kvm security and bug fix update

7.2.0-14.el92.5 - rhel guest failed boot with multi disks on error Failed to start udev Wait for Complete Device Initialization - CVE-2023-3354 QEMU: VNC: improper I/O watch removal in TLS handshake can lead to remote unauthenticated denial of service - hotplug/hotunplug mlx vdpa device to the...