K97035296: Microarchitectural Load Port Data Sampling - Information Leak (MLPDS) CVE-2018-12127

Security Advisory Description Microarchitectural Load Port Data Sampling MLPDS: Load ports on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. CVE-2018-12127 Impact MDS...

Linux kernel denial of service vulnerability (CNVD-2018-07889)

The Linux kernel is a computer operating system kernel written in C and assembly language, compliant with the POSIX standard, and distributed under the GNU General Public License. A denial of service vulnerability exists in the flushtmregstothread function in arch/powerpc/kernel/ptrace.c in Linux...

Xen PV DoS vulnerability with SYSENTER

ISSUE DESCRIPTION The SYSENTER instruction can be used by PV guests to accelerate system call processing. This instruction, however, leaves the EFLAGS register mostly unmodified - in particular, the NT flag doesn't get cleared. If the hypervisor subsequently uses IRET to return to the guest which...