Citrix XenServer 8.4.x / 9.x Multiple Vulnerabilities (CTX697170)

The version of Citrix XenServer installed on the remote host is 8.4.x or 9.x. It is, therefore, affected by multiple vulnerabilities as referenced in the CTX697170 advisory: - A grant table race on a v2 - v1 - v2 version change may allow a privileged user in a guest VM to compromise or crash the...

Linux Distros Unpatched Vulnerability : CVE-2026-79611

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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 activ...

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:...

UBUNTU-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...

SUSE 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...

DEBIAN-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

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...

ALPINE-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

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...

EUVD-2026-98828

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

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...

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 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...

PT-2026-111667

Name of the Vulnerable Software and Affected Versions XenServer versions 8.4 through 9 Description A logic error exists in the handling of XSA-308 where VMX VMEntry checks fail when a specific state combination occurs: DB is intercepted, Single Stepping is active, and blocked by STI/MovSS is...

CVE-2026-79611: Undefined Security Weakness

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...

EUVD-2019-9200

Malware in sbrugna...

SUSE 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...