CVE-2014-8594
xen - security update
EPSS 1.3%
Description
The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP).
How to fix CVE-2014-8594
To remediate CVE-2014-8594, upgrade the affected package to a fixed version below.
- Debian/xen—upgrade to 4.4.1-4 or later
- Debian/xen—upgrade to 4.1.4-3+deb7u4 or later
Is CVE-2014-8594 being exploited?
Low — EPSS is 1.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.4.1-4
- from 0, < 4.1.4-3+deb7u4