Fedora 44 : xen (2026-839be67202)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-839be67202 advisory. x86/AMD: ineffectual Zenbleed workaround XSA-515, CVE-2026-79608 x86: XPTI may break on huge-memory systems XSA-516, CVE-2026-79609 grant-table:...

CVE-2026-79611

For XSA-308 logic was introduced, as VMX VMEntry checks do not like the exact combination of state which occurs when DB in intercepted, Single Stepping is active, and blocked by STI/MovSS is active, despite this being a legitimate state to be in. The resulting VMEntry failure is fatal to the gues...

CVE-2026-79611

The Xen hypervisor is vulnerable to a VMEntry failure caused by logic introduced in XSA-308 . The issue occurs when a specific combination of states is met: #DB is intercepted, Single Stepping is active, and it is blocked by STI/MovSS . Additionally, a special sub-case exists when branch tracing ...

CVE-2026-79611 VMX: VMentry failure with branch tracing and blocked states

For XSA-308 logic was introduced, as VMX VMEntry checks do not like the exact combination of state which occurs when DB in intercepted, Single Stepping is active, and blocked by STI/MovSS is active, despite this being a legitimate state to be in. The resulting VMEntry failure is fatal to the gues...

VMX: VMentry failure with branch tracing and blocked states

ISSUE DESCRIPTION For XSA-308 logic was introduced, as VMX VMEntry checks do not like the exact combination of state which occurs when DB in intercepted, Single Stepping is active, and blocked by STI/MovSS is active, despite this being a legitimate state to be in. The resulting VMEntry failure is...

SUSE SLES12 Security Update : xen (SUSE-SU-2020:0334-1)

This update for xen fixes the following issues : CVE-2020-7211: potential directory traversal using relative paths via tftp server on Windows host bsc1161181. CVE-2019-19579: Device quarantine for alternate pci assignment methods bsc1157888. CVE-2019-19581: findnextbit issues bsc1158003...

CVE-2019-19583

An issue was discovered in Xen through 4.12.x allowing x86 HVM/PVH guest OS users to cause a denial of service guest OS crash because VMX VMEntry checks mishandle a certain case. Please see XSA-260 for background on the MovSS shadow. Please see XSA-156 for background on the need for DB...

VMX: VMentry failure with debug exceptions and blocked states

ISSUE DESCRIPTION Please see XSA-260 for background on the MovSS shadow: http://xenbits.xen.org/xsa/advisory-260.html Please see XSA-156 for background on the need for DB interception: http://xenbits.xen.org/xsa/advisory-156.html The VMX VMEntry checks does not like the exact combination of state...