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xen xen 4.5.1 vulnerabilities and exploits

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2.1
CVSSv2

CVE-2015-6654

The xenmem_add_to_physmap_one function in arch/arm/mm.c in Xen 4.5.x, 4.4.x, and previous versions does not limit the number of printk console messages when reporting a failure to retrieve a reference on a foreign page, which allows remote domains to cause a denial of service by ...
Xen Xen 4.4.0Xen Xen 4.5.0Xen Xen 4.5.1
2.1
CVSSv2

CVE-2015-7813

Xen 4.4.x, 4.5.x, and 4.6.x does not limit the number of printk console messages when reporting unimplemented hypercalls, which allows local guests to cause a denial of service via a sequence of (1) HYPERVISOR_physdev_op hypercalls, which are not properly handled in the do_physde...
Xen Xen 4.4.0Xen Xen 4.4.1Xen Xen 4.5.0Xen Xen 4.5.1Xen Xen 4.6.0
7.2
CVSSv2

CVE-2015-5166

Use-after-free vulnerability in QEMU in Xen 4.5.x and previous versions does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice.
Fedoraproject Fedora 21Fedoraproject Fedora 22Xen XenXen Xen 4.5.1
4.9
CVSSv2

CVE-2015-7812

The hypercall_create_continuation function in arch/arm/domain.c in Xen 4.4.x up to and including 4.6.x allows local guest users to cause a denial of service (host crash) via a preemptible hypercall to the multicall interface.
Xen Xen 4.4.0Xen Xen 4.4.1Xen Xen 4.4.2Xen Xen 4.4.3Xen Xen 4.5.0Xen Xen 4.5.1Xen Xen 4.5.2Xen Xen 4.6.0
5.6
CVSSv3

CVE-2016-5242

The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x up to and including 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them,...
Xen Xen 4.4.0Xen Xen 4.4.1Xen Xen 4.4.2Xen Xen 4.4.3Xen Xen 4.4.4Xen Xen 4.5.0Xen Xen 4.5.1Xen Xen 4.5.2Xen Xen 4.5.3Xen Xen 4.6.0Xen Xen 4.6.1
7.5
CVSSv3

CVE-2017-10916

The vCPU context-switch implementation in Xen up to and including 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features, which makes it easier for guest OS users to defeat ASLR and other protection mechanisms, aka XSA-220.
Xen Xen 4.5.0Xen Xen 4.5.1Xen Xen 4.5.2Xen Xen 4.5.3Xen Xen 4.5.5Xen Xen 4.6.0Xen Xen 4.6.1Xen Xen 4.6.2Xen Xen 4.6.4Xen Xen 4.6.5Xen Xen 4.7.1Xen Xen 4.8.0
8.6
CVSSv3

CVE-2015-8555

Xen 4.6.x, 4.5.x, 4.4.x, 4.3.x, and previous versions do not initialize x86 FPU stack and XMM registers when XSAVE/XRSTOR are not used to manage guest extended register state, which allows local guest domains to obtain sensitive information from other domains via unspecified vect...
Citrix Xenserver 6.0Xen Xen 4.3.0Xen Xen 4.3.1Xen Xen 4.3.2Xen Xen 4.3.3Xen Xen 4.3.4Xen Xen 4.4.0Xen Xen 4.4.1Xen Xen 4.4.2Xen Xen 4.4.3Xen Xen 4.4.4Xen Xen 4.5.0
6.2
CVSSv3

CVE-2016-6259

Xen 4.5.x up to and including 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.
Xen Xen 4.5.0Xen Xen 4.5.1Xen Xen 4.5.2Xen Xen 4.5.3Xen Xen 4.6.0Xen Xen 4.6.1Xen Xen 4.6.3Xen Xen 4.7.0Citrix Xenserver 6.0Citrix Xenserver 6.0.2Citrix Xenserver 6.1Citrix Xenserver 6.2.0
6.5
CVSSv3

CVE-2017-15591

An issue exists in Xen 4.5.x up to and including 4.9.x allowing attackers (who control a stub domain kernel or tool stack) to cause a denial of service (host OS crash) because of a missing comparison (of range start to range end) within the DMOP map/unmap implementation.
Xen Xen 4.5.0Xen Xen 4.5.1Xen Xen 4.5.2Xen Xen 4.5.3Xen Xen 4.5.5Xen Xen 4.6.0Xen Xen 4.6.1Xen Xen 4.6.3Xen Xen 4.6.4Xen Xen 4.6.5Xen Xen 4.6.6Xen Xen 4.7.0
6.5
CVSSv3

CVE-2017-14318

An issue exists in Xen 4.5.x up to and including 4.9.x. The function `__gnttab_cache_flush` handles GNTTABOP_cache_flush grant table operations. It checks to see if the calling domain is the owner of the page that is to be operated on. If it is not, the owner's grant table i...
Xen Xen 4.5.0Xen Xen 4.5.1Xen Xen 4.5.2Xen Xen 4.5.3Xen Xen 4.5.5Xen Xen 4.6.0Xen Xen 4.6.1Xen Xen 4.6.3Xen Xen 4.6.4Xen Xen 4.6.5Xen Xen 4.6.6Xen Xen 4.7.0
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