CVE-2017-12134

HIGH

Xen - Memory Corruption

Title source: llm

Description

The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability calculation.

References (10)

[Mailing List, Mitigation, Third Party Advisory] http://www.openwall.com/lists/oss-security/2017/08/15/4

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/100343

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1039176

[Mitigation, Patch, Vendor Advisory] http://xenbits.xen.org/xsa/advisory-229.html

[Issue Tracking, Mitigation, Patch, Third Party Advisory] https://bugzilla.redhat.com/show_bug.cgi?id=1477656

[Patch, Third Party Advisory] https://support.citrix.com/article/CTX225941

[Vendor Advisory] https://usn.ubuntu.com/3655-1/

[Vendor Advisory] https://usn.ubuntu.com/3655-2/

[Third Party Advisory] http://www.debian.org/security/2017/dsa-3981

[Third Party Advisory] https://security.gentoo.org/glsa/201801-14

Scores

CVSS v3 8.8

EPSS 0.0034

EPSS Percentile 56.4%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Classification

CWE

CWE-682

Status draft

Affected Products (7)

xen/xen

citrix/xenserver

citrix/xenserver

citrix/xenserver

citrix/xenserver

citrix/xenserver

citrix/xenserver

Timeline

Published Aug 24, 2017

Tracked Since Feb 18, 2026