SUSE CVE-2015-7812

The hypercallcreatecontinuation function in arch/arm/domain.c in Xen 4.4.x through 4.6.x allows local guest users to cause a denial of service host crash via a preemptible hypercall to the multicall interface...

SUSE CVE-2015-7969

Multiple memory leaks in Xen 4.0 through 4.6.x allow local guest administrators or domains with certain permission to cause a denial of service memory consumption via a large number of "teardowns" of domains with the vcpu pointer array allocated using the 1 XENDOMCTLmaxvcpus hypercall or the...

SUSE CVE-2016-5412

arch/powerpc/kvm/book3shvrmhandlers.S in the Linux kernel through 4.7 on PowerPC platforms, when CONFIGKVMBOOK3S64HV is enabled, allows guest OS users to cause a denial of service host OS infinite loop by making a HCEDE hypercall during the existence of a suspended transaction...

SUSE CVE-2017-8903

Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213...

SUSE CVE-2019-18423

An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service via a XENMEMaddtophysmap hypercall. p2m-maxmappedgfn is used by the functions p2mresolvetranslationfault and p2mgetentry to sanity check guest physical frame. The rest of the code in the two...

SUSE CVE-2021-28704

PoD operations on misaligned GFNs This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. x86 HVM and PVH guests may be started in populate-on-demand PoD mode, to provide a way for them to later easily have more memory assigne...

PT-2025-54001

Name of the Vulnerable Software and Affected Versions linux affected versions not specified Description A flaw exists in the Linux kernel related to Indirect Branch Tracking IBT on x86/Hyperv systems. Specifically, when running on hardware supporting IBT within Hyper-V VMs with ConfigVersion 9.3 ...

CVE-2021-28705

issues with partially successful P2M updates on x86 This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. x86 HVM and PVH guests may be started in populate-on-demand PoD mode, to provide a way for them to later easily have...

CVE-2021-28706

guests may exceed their designated memory limit When a guest is permitted to have close to 16TiB of memory, it may be able to issue hypercalls to increase its memory allocation beyond the administrator established limit. This is a result of a calculation done with 32-bit precision, which may...

CVE-2021-28706

CVE-2021-28706 affects the Xen hypervisor memory management: when a guest can approach 16 TiB, a 32-bit precision overflow in the memory-allocation calculation may allow the guest to bypass an administrator-set limit by miscomputing the compared value. The vulnerability enables memory expansion b...

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9053)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9053 advisory. - xen-blkback: fix error handling in xenblkbkmap Jan Beulich Orabug: 32492109 CVE-2021-26930 - xen-scsiback: don't 'handle' error by BUG Jan Beulic...

Missing alignment check in VCPUOP_register_vcpu_info

ISSUE DESCRIPTION The hypercall VCPUOPregistervcpuinfo is used by a guest to register a shared region with the hypervisor. The region will be mapped into Xen address space so it can be directly accessed. On Arm, the region is accessed with instructions which require a specific alignment...

PT-2020-5907 · Xen +2 · Xen +2

Name of the Vulnerable Software and Affected Versions: Xen versions through 4.13.x Description: An issue in Xen allows Arm guest OS users to cause a hypervisor crash due to a missing alignment check in the VCPUOP register vcpu info hypercall. This hypercall is used by a guest to register a shared...

ALPINE-CVE-2020-11739

An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service or possibly gain privileges because of missing memory barriers in read-write unlock paths. The read-write unlock paths don't contain a memory barrier. On Arm, this means a processor is allowed to...

The vulnerability of the hypercall_initialise function in Xen hypervisors, related to insufficient validation of input data, allows a malicious actor to trigger a service failure.

The vulnerability of the hypercallinitialise function in Xen hypervisors is related to incorrect error handling for the invalid format symbol. Exploiting this vulnerability can allow a malicious actor to cause service failures...

Xen Denial of Service Vulnerability (XSA-301)

According to its self-reported version number, the Xen Hypervisor installed on the remote host is affected by a denial of service vulnerability due to improper validation of input data. An authenticated, remote attack can exploit this, via a specially crafted hypercall followed by an access to an...

DEBIAN-CVE-2019-18423

An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service via a XENMEMaddtophysmap hypercall. p2m-maxmappedgfn is used by the functions p2mresolvetranslationfault and p2mgetentry to sanity check guest physical frame. The rest of the code in the two...

Design/Logic Flaw

An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service via a XENMEMaddtophysmap hypercall. p2m-maxmappedgfn is used by the functions p2mresolvetranslationfault and p2mgetentry to sanity check guest physical frame. The rest of the code in the two...

CVE-2019-18423

CVE-2019-18423 concerns the Xen hypervisor vulnerability affecting ARM guests via XENMEM_add_to_physmap in Xen 4.12.x and earlier. The issue stems from p2m handling: p2m->max_mapped_gfn is used to sanity-check guest frames in p2m_resolve_translation_fault() and p2m_get_entry(), while p2m_get_r...

CVE-2019-18423

An issue was discovered in Xen through 4.12.x allowing ARM guest OS users to cause a denial of service via a XENMEMaddtophysmap hypercall. p2m-maxmappedgfn is used by the functions p2mresolvetranslationfault and p2mgetentry to sanity check guest physical frame. The rest of the code in the two...