CVE-2015-4164
EPSS 0.07%
Description
The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
How to fix CVE-2015-4164
To remediate CVE-2015-4164, upgrade the affected package to a fixed version below.
- Debian/xen—upgrade to 4.6.0-1 or later
Is CVE-2015-4164 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.6.0-1