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.

• CWE-682

• http://www.debian.org/security/2017/dsa-3981
• http://www.openwall.com/lists/oss-security/2017/08/15/4Mailing List, Mitigation, Third Party Advisory
• http://www.securityfocus.com/bid/100343Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039176Third Party Advisory, VDB Entry
• http://xenbits.xen.org/xsa/advisory-229.htmlMitigation, Patch, Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1477656Issue Tracking, Mitigation, Patch, Third Party Advisory
• https://security.gentoo.org/glsa/201801-14
• https://support.citrix.com/article/CTX225941Patch, Third Party Advisory
• https://usn.ubuntu.com/3655-1/
• https://usn.ubuntu.com/3655-2/
• http://www.debian.org/security/2017/dsa-3981
• http://www.openwall.com/lists/oss-security/2017/08/15/4Mailing List, Mitigation, Third Party Advisory
• http://www.securityfocus.com/bid/100343Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039176Third Party Advisory, VDB Entry
• http://xenbits.xen.org/xsa/advisory-229.htmlMitigation, Patch, Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1477656Issue Tracking, Mitigation, Patch, Third Party Advisory
• https://security.gentoo.org/glsa/201801-14
• https://support.citrix.com/article/CTX225941Patch, Third Party Advisory
• https://usn.ubuntu.com/3655-1/
• https://usn.ubuntu.com/3655-2/

Published

Aug 24, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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