CWE Code: 665
Vulnerability Type: privilege_escalation
CVSS Score: 7.2
CWE Name:  Improper Initialization
Summary: an issue was discovered in the linux kernel through 4.17.11, as used in xen through 4.11.x. the xen_failsafe_callback entry point in arch/x86/entry/entry_64.s does not properly maintain rbx, which allows local users to cause a denial of service (uninitialized memory usage and system crash). within xen, 64-bit x86 pv linux guest os users can trigger a guest os crash or possibly gain privileges.
Access Authentication: NONE
Access Complexity: LOW
Access Vector: LOCAL
Impact (C/I/A): COMPLETE/COMPLETE/COMPLETE
Published Date: 2018-07-28
Last Modified Date: 2019-10-03