CVE-2010-4255
EPSS 0.82%
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.
How to fix CVE-2010-4255
To remediate CVE-2010-4255, upgrade the affected package to a fixed version below.
- Debian/xen—upgrade to 4.0.1-2 or later
Is CVE-2010-4255 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.0.1-2