High severity8.4NVD Advisory· Published May 18, 2016· Updated May 6, 2026

CVE-2016-4480

Description

The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen 4.6.x and earlier does not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might allow local guest OS users to gain privileges via a crafted mapping of memory.

Affected products

Oracle Corporation/Vm Server3 versions
cpe:2.3:o:oracle:vm_server:3.2:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:oracle:vm_server:3.2:*:*:*:*:*:*:*
- cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*
- cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*
Xen/Xen
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
Range: <=4.6.1

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlnvdVendor Advisory
xenbits.xen.org/xsa/advisory-176.htmlnvdVendor Advisory
www.debian.org/security/2016/dsa-3633nvd
www.securityfocus.com/bid/90710nvd
www.securitytracker.com/id/1035901nvd

News mentions

No linked articles in our index yet.

cvss	0.546
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000