Xen 4.2.x and 4.3.x, when using Intel VT-d and a PCI device has been assigned, does not clear the flag that suppresses IOMMU TLB flushes when unspecified errors occur, which causes the TLB entries to not be flushed and allows local guest administrators to cause a denial of service (host crash) or gain privileges via unspecified vectors.
Max CVSS
6.8
EPSS Score
0.26%
Published
2013-12-13
Updated
2017-01-07
Xen 4.2.x and 4.3.x, when using Intel VT-d for PCI passthrough, does not properly flush the TLB after clearing a present translation table entry, which allows local guest administrators to cause a denial of service or gain privileges via unspecified vectors related to an "inverted boolean parameter."
Max CVSS
7.9
EPSS Score
0.18%
Published
2013-11-23
Updated
2018-10-30
The XEN_DOMCTL_getmemlist hypercall in Xen 3.4.x through 4.3.x (possibly 4.3.1) does not always obtain the page_alloc_lock and mm_rwlock in the same order, which allows local guest administrators to cause a denial of service (host deadlock).
Max CVSS
5.2
EPSS Score
0.06%
Published
2013-12-24
Updated
2017-01-07
Xen 4.2.x and 4.3.x, when nested virtualization is disabled, does not properly check the emulation paths for (1) VMLAUNCH and (2) VMRESUME, which allows local HVM guest users to cause a denial of service (host crash) via unspecified vectors related to "guest VMX instruction execution."
Max CVSS
5.7
EPSS Score
0.45%
Published
2013-11-18
Updated
2017-08-29
Xen before 4.1.x, 4.2.x, and 4.3.x does not take the page_alloc_lock and grant_table.lock in the same order, which allows local guest administrators with access to multiple vcpus to cause a denial of service (host deadlock) via unspecified vectors.
Max CVSS
5.2
EPSS Score
0.06%
Published
2013-11-02
Updated
2018-12-13
The Ocaml xenstored implementation (oxenstored) in Xen 4.1.x, 4.2.x, and 4.3.x allows local guest domains to cause a denial of service (domain shutdown) via a large message reply.
Max CVSS
5.2
EPSS Score
0.06%
Published
2013-11-02
Updated
2017-01-07
Xen 4.3.x writes hypervisor mappings to certain shadow pagetables when live migration is performed on hosts with more than 5TB of RAM, which allows local 64-bit PV guests to read or write to invalid memory and cause a denial of service (crash).
Max CVSS
5.4
EPSS Score
0.16%
Published
2013-10-09
Updated
2017-01-07
The xenlight library (libxl) in Xen 4.0.x through 4.2.x, when IOMMU is disabled, provides access to a busmastering-capable PCI passthrough device before the IOMMU setup is complete, which allows local HVM guest domains to gain privileges or cause a denial of service via a DMA instruction.
Max CVSS
6.5
EPSS Score
0.06%
Published
2013-09-12
Updated
2017-01-07
The vmx_set_uc_mode function in Xen 3.3 through 4.3, when disabling caches, allows local HVM guests with access to memory mapped I/O regions to cause a denial of service (CPU consumption and possibly hypervisor or guest kernel panic) via a crafted GFN range.
Max CVSS
5.7
EPSS Score
0.18%
Published
2013-08-28
Updated
2016-12-22
Xen 4.0.x, 4.1.x, and 4.2.x does not properly restrict the contents of a XRSTOR, which allows local PV guest users to cause a denial of service (unhandled exception and hypervisor crash) via unspecified vectors.
Max CVSS
5.2
EPSS Score
0.06%
Published
2013-08-28
Updated
2014-12-12
Buffer overflow in the Python bindings for the xc_vcpu_setaffinity call in Xen 4.0.x, 4.1.x, and 4.2.x allows local administrators with permissions to configure VCPU affinity to cause a denial of service (memory corruption and xend toolstack crash) and possibly gain privileges via a crafted cpumap.
Max CVSS
7.4
EPSS Score
0.05%
Published
2013-08-28
Updated
2016-12-31
Xen 4.0.x and 4.1.x incorrectly releases a grant reference when releasing a non-v1, non-transitive grant, which allows local guest administrators to cause a denial of service (host crash), obtain sensitive information, or possibly have other impacts via unspecified vectors.
Max CVSS
6.9
EPSS Score
0.06%
Published
2013-05-21
Updated
2017-06-30
Xen 4.1.x and 4.2.x, when the XSA-45 patch is in place, does not properly maintain references on pages stored for deferred cleanup, which allows local PV guest kernels to cause a denial of service (premature page free and hypervisor crash) or possibly gain privileges via unspecified vectors.
Max CVSS
7.4
EPSS Score
0.06%
Published
2013-08-28
Updated
2017-06-30
Xen 4.2.x, 4.1.x, and 4.0, when using Intel VT-d for PCI passthrough, does not properly configure VT-d when supporting a device that is behind a legacy PCI Bridge, which allows local guests to cause a denial of service to other guests by injecting an interrupt.
Max CVSS
6.1
EPSS Score
0.24%
Published
2013-02-14
Updated
2014-04-19
Off-by-one error in the __addr_ok macro in Xen 3.3 and earlier allows local 64 bit PV guest administrators to cause a denial of service (host crash) via unspecified hypercalls that ignore virtual-address bits.
Max CVSS
5.5
EPSS Score
0.06%
Published
2013-10-01
Updated
2023-02-13
Xen in the Linux kernel, when running a guest on a host without hardware assisted paging (HAP), allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction.
Max CVSS
5.5
EPSS Score
0.06%
Published
2013-12-27
Updated
2020-12-08
16 vulnerabilities found
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