x86: Machine Check Error on Page Size Change DoS

ISSUE DESCRIPTION An erratum exists across some CPUs whereby an instruction fetch may cause a machine check error if the pagetables have been updated in a specific manner without invalidating the TLB. The x86 architecture explicitly permits modification of the pagetables without TLB invalidation,...

CVE-2019-17346

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers PCID and TLB flushes...

NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel-rt Multiple Vulnerabilities (NS-SA-2019-0183)

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel-rt packages installed that are affected by multiple vulnerabilities: - A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check...

NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0180)

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel packages installed that are affected by multiple vulnerabilities: - A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current...

CVE-2019-17346

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers PCID and TLB flushes...

CVE-2019-17346

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers PCID and TLB flushes...

DEBIAN-CVE-2019-17346

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers PCID and TLB flushes...

CVE-2019-17346

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers PCID and TLB flushes...

Denial of service

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers PCID and TLB flushes...

CVE-2019-17346

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers PCID and TLB flushes...

CVE-2019-17346

CVE-2019-17346 affects the Xen hypervisor (notably through 4.11.x). Root cause: an incompatibility between Process Context Identifiers (PCID) and TLB flushes in x86 PV guests, enabling either denial of service or privilege escalation for local attackers. Affected component: Xen PV guest OS path o...

Denial Of Service (DoS)

kernel is vulneralbe to denial of service DoS. The vulnerability exists as TLB flush happens too late on mremap...

PT-2019-4893 · Xen +1 · Xen +1

Name of the Vulnerable Software and Affected Versions: Xen versions prior to 4.12 Description: The issue is related to an incompatibility between Process Context Identifiers PCID and TLB flushes, allowing x86 PV guest OS users to cause a denial of service or gain privileges. This is due to...

Fedora 30 : xen (2019-53b0dc52ee)

xen: various flaws 1685577 grant table transfer issues on large hosts XSA-284 race with pass-through device hotplug XSA-285 x86: stealpage violates pagestruct access discipline XSA-287 x86: Inconsistent PV IOMMU discipline XSA-288 missing preemption in x86 PV page table unvalidation XSA-290 x86/P...

EulerOS Virtualization 2.5.3 : kernel (EulerOS-SA-2019-1244)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A flaw was found In the Linux kernel, through version 4.19.6, where a local user could exploit a use-after-free in the ALSA drive...

EulerOS Virtualization 2.5.4 : kernel (EulerOS-SA-2019-1253)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A division-by-zero in settermios, when debugging is enabled, was found in the Linux kernel. When the ioti driver is loaded, a loc...

SUSE SLES12 Security Update : xen (SUSE-SU-2019:0827-1)

This update for xen fixes the following issues : Security issues fixed : CVE-2019-6778: Fixed a heap buffer overflow in tcpemu found in slirp bsc1123157. CVE-2017-13672: Fixed an out of bounds read access during display update bsc1056336. Fixed an issue which could allow malicious or buggy guests...

SUSE-SU-2019:0825-1 Security update for xen

This update for xen fixes the following issues: Security issues fixed: - CVE-2018-18849: Fixed an out of bounds memory access issue that was found in the LSI53C895A SCSI Host Bus Adapter emulation while writing a message in lsidomsgin. It could occur during migration if the 'msglen' field has an...

openSUSE Security Update : xen (openSUSE-2019-1046) (Foreshadow)

This update for xen fixes the following issues : Update to Xen 4.10.2 bug fix release bsc1027519. Security vulnerabilities fixed : - CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient TLB flushing with AMD IOMMUs, which potentially allowed a guest to escalate its privileges, m...

openSUSE Security Update : the Linux Kernel (openSUSE-2019-974)

The openSUSE Leap 15.0 kernel was updated to 4.12.14-lp150.12.28.1 to receive various security and bugfixes. The following security bugs were fixed : - CVE-2018-18281: The mremap syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate removes entries from the...