VULNERABILITY INTELLIGENCE
CVE-2015-4164
CVSS score4.9 MEDIUM
EPSS probability0.44%
CISA KEVNot currently listed
Published2015-06-15
Last modified2026-06-17
CVSS vectorAV:L/AC:L/Au:N/C:N/I:N/A:C
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.