Description
The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP).
References (8)
Core 8
Core References
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201504-04
Permissions Required third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/62672
Patch, Vendor Advisory x_refsource_confirm
http://xenbits.xen.org/xsa/advisory-109.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/71149
Third Party Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2015/dsa-3140
Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.html
Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/98767
Scores
EPSS
0.0133
EPSS Percentile
80.2%
Details
CWE
CWE-20
Status
published
Products (21)
debian/debian_linux
7.0
opensuse/opensuse
13.1
opensuse/opensuse
13.2
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
xen/xen
4.1.0
xen/xen
4.1.1
... and 11 more
Published
Nov 19, 2014
Tracked Since
Feb 18, 2026