SUSE SLES12 Security Update : xen (SUSE-SU-2019:3297-1)

This update for xen fixes the following issues : CVE-2019-19581: Fixed a potential out of bounds on 32-bit Arm bsc1158003 XSA-307. CVE-2019-19582: Fixed a potential infinite loop when x86 accesses to bitmaps with a compile time known size of 64 bsc1158003 XSA-307. CVE-2019-19583: Fixed improper...

openSUSE Security Update : xen (openSUSE-2019-2508)

This update for xen fixes the following issues : - CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine Exception during Page Size Change, causing the CPU core to be non-functional. bsc1155945 -...

SUSE SLED15 / SLES15 Security Update : xen (SUSE-SU-2019:2961-1)

This update for xen fixes the following issues : CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine Exception during Page Size Change, causing the CPU core to be non-functional. bsc1155945...

CVE-2019-18425

An issue was discovered in Xen through 4.12.x allowing 32-bit PV guest OS users to gain guest OS privileges by installing and using descriptors. There is missing descriptor table limit checking in x86 PV emulation. When emulating certain PV guest operations, descriptor table accesses are performe...

Updated xen packages fix security vulnerability

This xen update is based on upstream 4.5.5 maintenance release, and fixes the following security issues: The qemu implementation in libvirt before 1.3.0 and Xen allows local guest OS users to cause a denial of service host disk consumption by writing to stdout or stderr CVE-2014-3672 The xrstor...

CVE-2016-7092: Undefined Security Weakness

The getpagefroml3e function in arch/x86/mm.c in Xen allows local 32-bit PV guest OS administrators to gain host OS privileges via vectors related to L3 recursive pagetables...

Design/Logic Flaw

Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention SMAP whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service hypervisor and VM crash by triggering a safety check...

CVE-2016-6258

The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries...

CVE-2016-6259: Improper Input Validation

Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention SMAP whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service hypervisor and VM crash by triggering a safety check...

CVE-2016-6258: Improper Access Control

The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries...

PT-2016-6810

Name of the Vulnerable Software and Affected Versions Xen versions 4.5.x through 4.7.x Description The issue allows local 32-bit PV guest OS kernels to cause a denial of service, resulting in a hypervisor and VM crash, by triggering a safety check due to the lack of Supervisor Mode Access...

FreeBSD : xen-kernel -- vulnerability in the iret hypercall handler (8c31b288-27ec-11e5-a4a5-002590263bf5)

The Xen Project reports : A buggy loop in Xen's compatiret function iterates the wrong way around a 32-bit index. Any 32-bit PV guest kernel can trigger this vulnerability by attempting a hypercalliret with EFLAGS.VM set. Given the use of get/putuser, and that the virtual addresses in question ar...

CVE-2015-4164

The compatiret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service large loop and system hang via a hypercalliret call with EFLAGS.VM set...

CVE-2015-4164

The compatiret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service large loop and system hang via a hypercalliret call with EFLAGS.VM set...

CVE-2015-4164: Undefined Security Weakness

The compatiret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service large loop and system hang via a hypercalliret call with EFLAGS.VM set...

PT-2015-1426

Name of the Vulnerable Software and Affected Versions Xen versions 3.1 through 4.5 Description The issue is related to the compat iret function in Xen, which incorrectly iterates through a loop. This allows local 32-bit PV guest administrators to cause a denial of service, resulting in a large lo...