CVE-2011-2901

Severity: medium (CVSS 5.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-10-01 · updated 2026-06-16
Weakness: CWE-399

Description

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.

Affected products

xen: through 3.3.0; 3.0.2, 3.0.3, 3.0.4, 3.1.3, 3.1.4, 3.2.0 (+3)

References

http://rhn.redhat.com/errata/RHSA-2011-1212.html
http://secunia.com/advisories/55082
http://security.gentoo.org/glsa/glsa-201309-24.xml
http://www.openwall.com/lists/oss-security/2011/09/02/2
https://bugzilla.redhat.com/show_bug.cgi?id=728042
http://rhn.redhat.com/errata/RHSA-2011-1212.html
http://secunia.com/advisories/55082
http://security.gentoo.org/glsa/glsa-201309-24.xml
http://www.openwall.com/lists/oss-security/2011/09/02/2
https://bugzilla.redhat.com/show_bug.cgi?id=728042

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