UpHeron
All vulnerabilities

Servers and applications

CVE-2011-2901

Off-by-one error in the __addr_ok macro in Xen 3.3 and earlier allows local 64 bit PV guest administrators to cause a denial of service (host crash) via unspecified hypercalls that ignore virtual-address bits.

Severity
Medium 5.5
Published
1 Oct 2013
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.6% in the next 30 daysHigher than 48% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-399
Attack
From the same local network · Needs a login
Attacker can
Take it down
CVSS vector
AV:A/AC:L/Au:S/C:N/I:N/A:C
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 3.2.3
  • Version 3.2.2
  • Version 3.2.1
  • Version 3.2.0
All 10 release lines
  • Every version up to 3.3.0
  • Version 3.0.2
  • Version 3.0.3
  • Version 3.0.4
  • Version 3.1.3
  • Version 3.1.4
  • Version 3.2.0
  • Version 3.2.1
  • Version 3.2.2
  • Version 3.2.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-2901
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-2901