Improper input validation in Xen

CVE-2015-7835

The mod_l2_entry function in arch/x86/mm.c in Xen 3.4 through 4.6.x does not properly validate level 2 page table entries, which allows local PV guest administrators to gain privileges via a crafted superpage mapping.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.004 (35.0th percentile) — read the EPSS interpretation.

Affected products

  • Xen — versions 3.4.0, 3.4.1, 3.4.2
  • N/a — versions n/a

Weakness classification (CWE)

References