Improper Input Validation Affecting xen package, versions [3.4.0,4.6.0]


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.06% (30th percentile)

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  • Snyk IDSNYK-UNMANAGED-XEN-2383725
  • published26 Jan 2022
  • disclosed30 Oct 2015
  • creditUnknown

Introduced: 30 Oct 2015

CVE-2015-7835  (opens in a new tab)
CWE-20  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

There is no fixed version for xen.

Overview

Affected versions of this package are vulnerable to Improper Input Validation. 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.

CVSS Scores

version 3.1