CVE-2017-12134
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.
Key facts
- CVSS score
- 8.8 (v3.0)
- Severity
- HIGH
- CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H- Weakness (CWE)
- CWE-682
- EPSS score
- 0.5% (41th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2017-3718)
- Published
- August 24, 2017
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2017-3718 in the EU Vulnerability Database. Last updated in EUVD on August 5, 2024.
View on the EU Vulnerability DatabaseAffected products
- citrix / xenserver
- citrix / xenserver
- citrix / xenserver
- citrix / xenserver
- citrix / xenserver
- citrix / xenserver
- xen / xen
Certified products that may be affected
1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.
- Citrix XenServer ® 7.1 LTSR Enterprise Edition (CU2) - Citrix Systems, Inc. - Common Criteria 383-4-467 - archived
References
- http://www.debian.org/security/2017/dsa-3981
- http://www.openwall.com/lists/oss-security/2017/08/15/4(Mailing List, Mitigation, Third Party Advisory)
- http://www.securityfocus.com/bid/100343(Third Party Advisory, VDB Entry)
- http://www.securitytracker.com/id/1039176(Third Party Advisory, VDB Entry)
- http://xenbits.xen.org/xsa/advisory-229.html(Mitigation, Patch, Vendor Advisory)
- https://bugzilla.redhat.com/show_bug.cgi?id=1477656(Issue Tracking, Mitigation, Patch, Third Party Advisory)
- https://security.gentoo.org/glsa/201801-14
- https://support.citrix.com/article/CTX225941(Patch, Third Party Advisory)
- https://usn.ubuntu.com/3655-1/
- https://usn.ubuntu.com/3655-2/
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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