Rockwell Automation PV Plus/PV Plus-CE DeviceNet 2711P-RN10H Communication Adapter

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Rockwell Automation PV Plus DeviceNet 2711P-RN10C Communication Adapter

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Rockwell Automation PV Plus ControlNet 2711P-RN15C Communication Adapter

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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...

Citrix XenServer Multiple Security Updates

Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that, depending on configuration, may allow a malicious user of a PV guest VM to crash or compromise the host. These vulnerabilities affect all currently supported versions of Citrix XenServer up ...

x86 shadow: Insufficient TLB flushing when using PCID

ISSUE DESCRIPTION Use of Process Context Identifiers PCID was introduced into Xen in order to improve performance after XSA-254 and in particular its Meltdown sub-issue. This enablement implied changes to the TLB flushing logic. One aspect which was overlooked is the safety of switching between...

x86: Inconsistent PV IOMMU discipline

ISSUE DESCRIPTION In order for a PV domain to set up DMA from a passed-through device to one of its pages, the page must be mapped in the IOMMU. On the other hand, before a PV page may be used as a "special" page type such as a pagetable or descriptor table, it must not be writable in the IOMMU...

x86: PV kernel context switch corruption

ISSUE DESCRIPTION On hardware supporting the fsgsbase feature, 64bit PV guests can set and clear the applicable control bit in its virtualised %cr4, but the feature remains fully active in hardware. Therefore, the associated instructions are actually usable. Linux, which does not currently suppor...

x86: steal_page violates page_struct access discipline

ISSUE DESCRIPTION Xen's reference counting rules were designed to allow pages to change owner and state without requiring a global lock. Each page has a page structure, and a very specific set of access disciplines must be observed to ensure that pages are freed properly, and that no writable...

race with pass-through device hotplug

ISSUE DESCRIPTION When adding a passed-through PCI device to a domain after it was already started, IOMMU page tables may need constructing on the fly. For PV guests the decision whether a page ought to have a mapping is based on whether the page is writable, to prevent IOMMU access to things lik...

x86/PV: page type reference counting issue with failed IOMMU update

ISSUE DESCRIPTION When an x86 PV domain has a passed-through PCI device assigned, IOMMU mappings may need to be updated when the type of a particular page changes. Such an IOMMU operation may fail. In the event of failure, while at present the affected guest would be forcibly crashed, the already...

missing preemption in x86 PV page table unvalidation

ISSUE DESCRIPTION XSA-273 changes required, among other things, making any PTE updates restartable. The changes making PTE updates restartable assumed that L2 pagetables would always be promoted preemptibly; but this turns out not to be the case when using the 'linear pagetable' feature; the resu...

Fedora 28 : xen (2018-a7862a75f5)

preemption checks bypassed in x86 PV MM handling XSA-264, CVE-2018-12891 1595959 x86: DB exception safety check can be triggered by a guest XSA-265, CVE-2018-12893 1595958 libxl fails to honour readonly flag on HVM emulated SCSI disks XSA-266, CVE-2018-12892 1595957 Note that Tenable Network...

CVE-2018-19965

An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service host OS crash because GP0 can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 aka Meltdown mitigation...

Xen Project INVPCID with Non-Canonical Addresses DoS (XSA-279)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a guest-to-host denial of service vulnerability. An attacker located on a guest virtual machine may be able to exploit this vulnerability to affect the availability of the host system. On...

Code injection

An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service host OS crash because GP0 can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 aka Meltdown mitigation...

Design/Logic Flaw

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service host OS crash or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorre...

CVE-2018-19966

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service host OS crash or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorre...

CVE-2018-19965

An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service host OS crash because GP0 can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 aka Meltdown mitigation...

CVE-2018-19966

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service host OS crash or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorre...