Access Restriction Bypass Affecting xen package, versions [3.3.0,4.4.1]


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.06% (31st percentile)

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  • Snyk IDSNYK-UNMANAGED-XEN-2383850
  • published26 Jan 2022
  • disclosed2 Oct 2014
  • creditUnknown

Introduced: 2 Oct 2014

CVE-2014-7156  (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 Access Restriction Bypass. The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.

References

CVSS Scores

version 3.1