DEBIAN-CVE-2016-4480

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2016-4480
Published: 18 May 2016, 14:59
Last modified:28 Apr 2026, 20:15

Vulnerability Summary

Overall Risk (default)
medium
34/100
CVSS Score
8.4 HIGH
3.0 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 May 2016, 14:59
Published
Vulnerability first disclosed
28 Apr 2026, 20:15
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•HIGH•Score: 8.4CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•xen

    < 4.8.0~rc3-1 | < 4.8.0~rc3-1 | < 4.8.0~rc3-1 | < 4.8.0~rc3-1

References (1)