UBUNTU-CVE-2020-27674

An issue was discovered in Xen through 4.14.x allowing x86 PV guest OS users to gain guest OS privileges by modifying kernel memory contents, because invalidation of TLB entries is mishandled during use of an INVLPG-like attack technique...

CVE-2020-27674

An issue was discovered in Xen through 4.14.x allowing x86 PV guest OS users to gain guest OS privileges by modifying kernel memory contents, because invalidation of TLB entries is mishandled during use of an INVLPG-like attack technique...

Xen Denial of Service vulnerability (XSA-304)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a denial of service vulnerability. An erratum exists across some CPUs whereby an instruction fetch may cause a machine check error if the pagetables have been updated in a specific manner...

kpatch: hw: incomplete fix for CVE-2018-12207

It was found that the Red Hat Enterprise Linux 8 kpatch update did not include the complete fix for CVE-2018-12207. A flaw was found in the way Intel CPUs handle inconsistency between, virtual to physical memory address translations in CPU's local cache and system software's Paging structure...

hw: Machine Check Error on Page Size Change (IFU)

A flaw was found in the way Intel CPUs handle inconsistency between, virtual to physical memory address translations in CPU's local cache and system software's Paging structure entries. A privileged guest user may use this flaw to induce a hardware Machine Check Error on the host processor,...

x86: Machine Check Error on Page Size Change DoS

ISSUE DESCRIPTION An erratum exists across some CPUs whereby an instruction fetch may cause a machine check error if the pagetables have been updated in a specific manner without invalidating the TLB. The x86 architecture explicitly permits modification of the pagetables without TLB invalidation,...