Description
Off-by-one error in the flask_security_avc_cachestats function in xsm/flask/flask_op.c in Xen 4.2.x and 4.3.x, when the maximum number of physical CPUs are in use, allows local users to cause a denial of service (host crash) or obtain sensitive information from hypervisor memory by leveraging a FLASK_AVC_CACHESTAT hypercall, which triggers a buffer over-read.
References (5)
Core 5
Core References
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html
Third Party Advisory vendor-advisory
x_refsource_gentoo
http://security.gentoo.org/glsa/glsa-201407-03.xml
Patch, Vendor Advisory x_refsource_confirm
http://xenbits.xen.org/xsa/advisory-85.html
Mailing List mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2014/02/07/12
Mailing List mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2014/02/10/6
Scores
EPSS
0.0010
EPSS Percentile
28.0%
Details
CWE
CWE-189
Status
published
Products (6)
xen/xen
4.2.0
xen/xen
4.2.1
xen/xen
4.2.2
xen/xen
4.2.3
xen/xen
4.3.0
xen/xen
4.3.1
Published
Apr 01, 2014
Tracked Since
Feb 18, 2026