CVE-2017-12134

8.8 highEPSS 0.5%

High (8.8). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.0

8.8 high

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
CWE: CWE-682
Published: 2017-08-24
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

citrix:xenserver
xen:xen

References

http://www.debian.org/security/2017/dsa-3981
http://www.openwall.com/lists/oss-security/2017/08/15/4
http://www.securityfocus.com/bid/100343
http://www.securitytracker.com/id/1039176
http://xenbits.xen.org/xsa/advisory-229.html

Check your stack JSON