VULNERABILITY INTELLIGENCE

CVE-2010-4255

CVSS score6.1 MEDIUM
EPSS probability0.77%
CISA KEVNot currently listed
Published2011-01-25
Last modified2026-06-16
CVSS vectorAV:A/AC:L/Au:N/C:N/I:N/A:C

Description

The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access.

Primary references