CVE-2018-15594

arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests...

CVE-2018-15594

arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests...

CVE-2018-15594

arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests...

Xen xen-netback xenvif_set_hash_mapping Integer Overflow Exploit

Exploit for multiple platform in category dos / poc Xen: integer overflow in xen-netback xenvifsethashmapping The xen-netback linux kernel module is the default backend for Xen's virtual network devices. Since commit 40d8abdee806d496a60ee607a6d01b1cd7fabaf0 the backend supports an additional...

DEBIAN-CVE-2018-15469

An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG...

USN-3740-1 linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem, linux-raspi2 vulnerabilities

It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault L1TF. A local attacker in a guest virtual machine could use this to expose sensitive...

Kernel: hw: cpu: L1 terminal fault (L1TF)

Modern operating systems implement virtualization of physical memory to efficiently use available system resources and provide inter-domain protection through access control and isolation. The L1TF issue was found in the way the x86 microprocessor designs have implemented speculative execution of...

Security update for libvirt (moderate)

This update for libvirt fixes the following issues: Security issue fixed: - CVE-2018-3639: Add support for 'ssbd' and 'virt-ssbd' CPUID feature bits to address V4 Speculative Store Bypass aka "Memory Disambiguation" bsc1092885. Bug fixes: - bsc1094325: Enable virsh blockresize for XEN guests...

SUSE SLED12 / SLES12 Security Update : libvirt (SUSE-SU-2018:2304-1) (Spectre)

This update for libvirt fixes the following issues: Security issue fixed : - CVE-2018-3639: Add support for 'ssbd' and 'virt-ssbd' CPUID feature bits to address V4 Speculative Store Bypass aka 'Memory Disambiguation' bsc1092885. Bug fixes : - bsc1094325: Enable virsh blockresize for XEN guests...

openSUSE Security Update : libvirt (openSUSE-2018-860) (Spectre)

This update for libvirt fixes the following issues : Security issue fixed : - CVE-2018-3639: Add support for 'ssbd' and 'virt-ssbd' CPUID feature bits to address V4 Speculative Store Bypass aka 'Memory Disambiguation' bsc1092885. Bug fixes : - bsc1094325: Enable virsh blockresize for XEN guests...

Important: Red Hat Security Advisory: rhvm-setup-plugins security, bug fix, and enhancement update

An update for rhvm-setup-plugins is now available for Red Hat Virtualization Engine 4.2. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

CVE-2018-5531

Through undisclosed methods, on F5 BIG-IP 13.0.0-13.1.0.7, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, or 11.2.1-11.5.6, adjacent network attackers can cause a denial of service for VCMP guest and host systems. Attack must be sourced from adjacent network layer 2...

UBUNTU-CVE-2018-12893

An issue was discovered in Xen through 4.10.x. One of the fixes in XSA-260 added some safety checks to help prevent Xen livelocking with debug exceptions. Unfortunately, due to an oversight, at least one of these safety checks can be triggered by a guest. A malicious PV guest can crash Xen, leadi...

CVE-2018-12892

An issue was discovered in Xen 4.7 through 4.10.x. libxl fails to pass the readonly flag to qemu when setting up a SCSI disk, due to what was probably an erroneous merge conflict resolution. Malicious guest administrators or in some situations users may be able to write to supposedly read-only di...

ALPINE-CVE-2018-12891

An issue was discovered in Xen through 4.10.x. Certain PV MMU operations may take a long time to process. For that reason Xen explicitly checks for the need to preempt the current vCPU at certain points. A few rarely taken code paths did bypass such checks. By suitably enforcing the conditions...

x86: #DB exception safety check can be triggered by a guest

ISSUE DESCRIPTION One of the fixes in XSA-260 added some safety checks to help prevent Xen livelocking with debug exceptions. Unfortunately, due to an oversight, at least one of these safety checks can be triggered by a guest. IMPACT A malicious PV guest can crash Xen, leading to a Denial of...

CVE-2018-12904

In arch/x86/kvm/vmx.c in the Linux kernel before 4.17.2, when nested virtualization is used, local attackers could cause L1 KVM guests to VMEXIT, potentially allowing privilege escalations and denial of service attacks due to lack of checking of CPL...

Security Bulletin: PowerKVM has released updates in response to the vulnerabilities known as Spectre and Meltdown.

Summary PowerKVM may be affected by vulnerabilities in the Linux kernel. IBM has now addressed these vulnerabilities. IBM has released the following updates for PowerKVM in response to CVE-2017-5753, CVE-2017-5715 and CVE-2017-5754. Vulnerability Details CVEID: CVE-2017-5753 CVEID: CVE-2017-5715...

Security update for qemu (important)

This update for qemu fixes the following issues: This security issue was fixed: - CVE-2018-3639: Spectre v4 vulnerability mitigation support for KVM guests bsc1092885. Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of al...

SUSE-SU-2018:1386-1 Security update for qemu

This update for qemu fixes several issues. This security issue was fixed: - CVE-2018-3639: Spectre v4 vulnerability mitigation support for KVM guests bsc1092885. Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prio...