Improper Input Validation Affecting xen package, versions [4.1.0,4.1.3]


Severity

Recommended
0.0
high
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-2383795
  • published26 Jan 2022
  • disclosed23 Nov 2012
  • creditUnknown

Introduced: 23 Nov 2012

CVE-2012-3495  (opens in a new tab)
CWE-20  (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 physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.

CVSS Scores

version 3.1