CVE-2015-7835

Xen 3.4-4.6.x - Privilege Escalation

Title source: llm
STIX 2.1

Description

The mod_l2_entry function in arch/x86/mm.c in Xen 3.4 through 4.6.x does not properly validate level 2 page table entries, which allows local PV guest administrators to gain privileges via a crafted superpage mapping.

References (12)

Core 12
Core References
Vendor Advisory x_refsource_confirm
http://support.citrix.com/article/CTX202404
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/77366
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html
Vendor Advisory x_refsource_confirm
http://xenbits.xen.org/xsa/advisory-148.html
Mailing List vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2015/dsa-3390
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1034032
Mailing List vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201604-03

Scores

EPSS 0.0010
EPSS Percentile 26.3%

Details

CWE
CWE-20 CWE-264
Status published
Products (30)
xen/xen 3.4.0
xen/xen 3.4.1
xen/xen 3.4.2
xen/xen 3.4.3
xen/xen 3.4.4
xen/xen 4.0.0
xen/xen 4.0.1
xen/xen 4.0.2
xen/xen 4.0.3
xen/xen 4.0.4
... and 20 more
Published Oct 30, 2015
Tracked Since Feb 18, 2026