SUSE SLED15 / SLES15 Security Update : qemu (SUSE-SU-2019:2192-1)

This update for qemu fixes the following issues : Security issues fixed : CVE-2019-14378: Security fix for heap overflow in ipreass on big packet input bsc1143794. CVE-2019-12155: Security fix for NULL pointer dereference while releasing spice resources bsc1135902. CVE-2019-13164: Security fix fo...

openSUSE Security Update : qemu (openSUSE-2019-1274)

This update for qemu fixes the following issues : Security issues fixed : - CVE-2019-9824: Fixed information leak in slirp bsc1129622. - CVE-2019-8934: Added method to specify whether or not to expose certain ppc64 hostinformation bsc1126455. - CVE-2019-3812: Fixed Out-of-bounds memory access and...

Security update for qemu (important)

openSUSE Security Update: Security update for qemu Announcement ID: openSUSE-SU-2019:1274-1 Rating: important References: 1118900 1125721 1126455 1129622 1130675 1131955 Cross-References: CVE-2018-20815 CVE-2019-3812 CVE-2019-8934 CVE-2019-9824 Affected Products: openSUSE Leap 42.3 An update that...

Linux vcpu_scan_ioapic DoS

The vulnerability of the vcpuscanioapic function arch/x86/kvm/x86.c in the Linux operating system’s kernel is related to pointer arithmetic errors. Exploiting this vulnerability can allow an attacker to cause a service failure due to a system call to the Kernel-Based Virtual Machine KVM...

DEBIAN-CVE-2018-19407

The vcpuscanioapic function in arch/x86/kvm/x86.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service NULL pointer dereference and BUG via crafted system calls that reach a situation where ioapic is uninitialized...

Linux kernel denial of service vulnerability (CNVD-2018-26910)

The Linux kernel is a computer operating system kernel written in C and assembly language, compliant with the POSIX standard, and distributed under the GNU General Public License. A denial of service vulnerability exists in the vcpuscanioapic function in arch/x86/kvm/x86.c in the Linux kernel. A...

PT-2018-2577

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.19.2 Description The issue is related to the vcpu scan ioapic function in the Linux kernel, which can cause a denial of service due to a NULL pointer dereference and BUG when crafted system calls are made,...

Overcommitting pCPUs on individual XenServer VMs

Citrix recommends that you do not run a VM with more virtual CPUs vCPUs than the number physical CPUs pCPUs available on the XenServer host. The number of pCPUs available to XenServer can change even after the installation of VMs. For example, through actual hardware changes, changes in the BIOS...

Design/Logic Flaw

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...

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...

CVE-2018-12891: Undefined Security Weakness

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...

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...

preemption checks bypassed in x86 PV MM handling

ISSUE DESCRIPTION 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 through its own page table...

PT-2018-11454

Name of the Vulnerable Software and Affected Versions Xen versions 3.3 and earlier Xen versions 3.4 through 4.10.x Description An issue in Xen allows a malicious or buggy PV guest to cause a Denial of Service DoS affecting the entire host, specifically by preventing use of a physical CPU for an...

OracleVM 3.3 / 3.4 : procps (OVMSA-2018-0226)

The remote OracleVM system is missing necessary patches to address critical security updates : - vmstat: fix invalid CPU utilization stats after vCPU hot-plug/unplug Konrad Rzeszutek Wilk bug 18011019 - drop leftover assignment in fix for CVE-2018-1124 causing a severe regression - Resolves:...

openSUSE: Security Advisory for xen (openSUSE-SU-2018:1274-1)

The remote host is missing an update for the Copyright C 2018 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:1184-1) (Meltdown)

This update for xen to version 4.9.2 fixes several issues. This feature was added : - Added script, udev rule and systemd service to watch for vcpu online/offline events in a HVM domU. They are triggered via 'xl vcpu-set domU N' These security issues were fixed : - CVE-2018-8897: Prevent...

SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:0909-1) (Meltdown) (Spectre)

This update for xen fixes the following issues: Update to Xen 4.7.5 bug fix only release bsc1027519 Security issues fixed : - CVE-2018-7540: Fixed DoS via non-preemptable L3/L4 pagetable freeing XSA-252 bsc1080635 - CVE-2018-7541: A grant table v2 - v1 transition may crash Xen XSA-255 bsc1080662 ...

SUSE-SU-2018:0909-1 Security update for xen

This update for xen fixes the following issues: Update to Xen 4.7.5 bug fix only release bsc1027519 Security issues fixed: - CVE-2018-7540: Fixed DoS via non-preemptable L3/L4 pagetable freeing XSA-252 bsc1080635 - CVE-2018-7541: A grant table v2 - v1 transition may crash Xen XSA-255 bsc1080662 -...

openSUSE Security Update : qemu (openSUSE-2018-8) (Spectre)

This update for qemu fixes the following issues : A new feature was added : - Support EPYC vCPU type bsc1052825 fate324038 Also a mitigation for a security problem has been applied : - CVE-2017-5715: QEMU was updated to allow passing through new MSR and CPUID flags from the host VM to the CPU, to...