CVE-2014-8867

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-12-01 · updated 2026-06-17
Weakness: CWE-17

Description

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O (MMIO) emulated in the hypervisor, which allows local HVM guests to cause a denial of service (host crash) via unspecified vectors.

Affected products

Debian Linux: 7.0
Opensuse: 13.1, 13.2
Red Hat Enterprise Linux: 5.0
RedHat Enterprise Linux Desktop: 5.0
xen: through 3.2.0; 3.2.1, 3.2.2, 3.2.3, 4.4.0, 4.4.1

References

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html
http://rhn.redhat.com/errata/RHSA-2015-0783.html
http://secunia.com/advisories/59949
http://secunia.com/advisories/62672
http://support.citrix.com/article/CTX200288
http://support.citrix.com/article/CTX201794
http://www.debian.org/security/2015/dsa-3140
http://www.securityfocus.com/bid/71331
http://xenbits.xenproject.org/xsa/advisory-112.html
https://security.gentoo.org/glsa/201504-04

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