CVE-2018-15468

An issue was discovered in Xen through 4.11.x. The DEBUGCTL MSR contains several debugging features, some of which virtualise cleanly, but some do not. In particular, Branch Trace Store is not virtualised by the processor, and software has to be careful to configure it suitably not to lock up the...

SUSE-SU-2018:2410-1 Security update for xen

This update for xen fixes the following security issues: - CVE-2018-3646: Systems with microprocessors utilizing speculative execution and address translations may have allowed unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS...

SUSE-SU-2018:2401-1 Security update for xen

This update for xen fixes the following security issues: - CVE-2018-3646: Systems with microprocessors utilizing speculative execution and address translations may have allowed unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS...

x86: Incorrect MSR_DEBUGCTL handling lets guests enable BTS

ISSUE DESCRIPTION The DEBUGCTL MSR contains several debugging features, some of which virtualise cleanly, but some do not. In particular, Branch Trace Store is not virtualised by the processor, and software has to be careful to configure it suitably not to lock up the core. As a result, it must...

XenServer Multiple Security Updates

Description of Problem Several security issues have been identified that impact XenServer. Customers should consider these issues and determine possible impact to their own systems. These updates provide a mitigation for recently disclosed issues affecting Intel CPUs. These issues, if exploited,...