Moderate: qemu-kvm security, bug fix, and enhancement 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. The following packages have been upgraded to a later upstream version: qemu-kvm 7.0.0...

ALSA-2022:7967 Moderate: qemu-kvm security, bug fix, and enhancement 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. The following packages have been upgraded to a later upstream version: qemu-kvm 7.0.0...

GSD-2022-1007537 xen/gntdev: Prevent leaking grants

xen/gntdev: Prevent leaking grants This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.264 by commit cb1ccfe7655380f77a58b340072f5f40bc285902,...

PT-2022-35371 · Linux · Kvm

Name of the Vulnerable Software and Affected Versions: KVM versions prior to v5.15.75 Description: The issue concerns the propagation of PERF GLOBAL CTRL settings from vmcs12 to vmcs02 in nVMX. The actual impact and attack plausibility have not yet been proven. Recommendations: For versions prior...

Linux kernel has unspecified vulnerabilities (CNVD-2022-77501)

Linux kernel is the kernel used by the Linux Foundation's open source operating system, Linux. Linux kernel has a security vulnerability that stems from a flaw discovered in the AMD nested virtualization SVM of KVM. A malicious L1 guest may intentionally not intercept the shutdown of a...

PT-2022-35132 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v6.0.3 Description: The issue concerns the propagation of PERF GLOBAL CTRL settings from vmcs12 to vmcs02 in the nVMX component of KVM. The actual impact and attack plausibility have not yet been proven...

PT-2022-35246 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v5.15.76 Description: The issue concerns the KVM arm64 vgic, specifically with the exit condition in the scan its table function. The actual impact and attack plausibility have not yet been proven...

CVE-2022-34331

After performing a sequence of Power FW950, FW1010 maintenance operations a SRIOV network adapter can be improperly configured leading to desired VEPA configuration being disabled. IBM X-Force ID: 229695...

PT-2022-22135 · Ibm · Ibm Power

Name of the Vulnerable Software and Affected Versions: IBM Power versions FW950 through FW1010 Description: The issue arises after a sequence of maintenance operations on Power FW950 and FW1010, leading to an improper configuration of a SRIOV network adapter. This results in the desired VEPA...

RHEL 8 : virt:rhel and virt-devel:rhel (RHSA-2022:7472)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:7472 advisory. Kernel-based Virtual Machine KVM offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contai...

kernel: KVM: NULL pointer dereference in kvm_irq_delivery_to_apic_fast()

A flaw was found in the Linux kernel’s KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a...

kernel: KVM: VMX: Prevent RSB underflow before vmenter

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Prevent RSB underflow before vmenter On VMX, there are some balanced returns between the time the guest's SPECCTRL value is written, and the vmenter. Balanced returns matched by a preceding call are usually ok, but it's...

kernel: KVM: x86/mmu: make apf token non-zero to fix bug

A hang vulnerability is possible in the Linux kernel in arch/x86/kvm/mmu/mmu.c. This issue may lead to compromised availability...

kernel: NULL pointer dereference in x86_emulate_insn may lead to DoS

A NULL pointer dereference flaw was found in the Linux kernel’s KVM module, which can lead to a denial of service in the x86emulateinsn in arch/x86/kvm/emulate.c. This flaw occurs while executing an illegal instruction in guest in the Intel CPU...

kernel: KVM: x86: Drop WARNs that assert a triple fault never "escapes" from L2

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Drop WARNs that assert a triple fault never "escapes" from L2 Remove WARNs that sanity check that KVM never lets a triple fault for L2 escape and incorrectly end up in L1. In normal operation, the sanity check is...

kernel: KVM: Unconditionally get a ref to /dev/kvm module when creating a VM

REJECTED CVE In the Linux kernel, the following vulnerability has been resolved: KVM: Unconditionally get a ref to /dev/kvm module when creating a VM...

kernel: NULL pointer dereference in x86_emulate_insn may lead to DoS

A NULL pointer dereference flaw was found in the Linux kernel’s KVM module, which can lead to a denial of service in the x86emulateinsn in arch/x86/kvm/emulate.c. This flaw occurs while executing an illegal instruction in guest in the Intel CPU...

AZL-35163 CVE-2022-3872 affecting package qemu for versions less than 6.2.0-18

An off-by-one read/write issue was found in the SDHCI device of QEMU. It occurs when reading/writing the Buffer Data Port Register in sdhcireaddataport and sdhciwritedataport, respectively, if datacount == blocksize. A malicious guest could use this flaw to crash the QEMU process on the host,...

CVE-2022-42327

x86: unintended memory sharing between guests On Intel systems that support the "virtualize APIC accesses" feature, a guest can read and write the global shared xAPIC page by moving the local APIC out of xAPIC mode. Access to this shared page bypasses the expected isolation that should exist...

DEBIAN-CVE-2022-42327

x86: unintended memory sharing between guests On Intel systems that support the "virtualize APIC accesses" feature, a guest can read and write the global shared xAPIC page by moving the local APIC out of xAPIC mode. Access to this shared page bypasses the expected isolation that should exist...