CVE-2018-14678

An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges.

• CWE-665

• http://www.securityfocus.com/bid/104924Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1041397Third Party Advisory, VDB Entry
• https://lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlMailing List, Third Party Advisory
• https://usn.ubuntu.com/3931-1/Third Party Advisory
• https://usn.ubuntu.com/3931-2/Third Party Advisory
• https://www.debian.org/security/2018/dsa-4308Third Party Advisory
• https://xenbits.xen.org/xsa/advisory-274.htmlMitigation, Patch, Vendor Advisory
• http://www.securityfocus.com/bid/104924Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1041397Third Party Advisory, VDB Entry
• https://lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlMailing List, Third Party Advisory
• https://usn.ubuntu.com/3931-1/Third Party Advisory
• https://usn.ubuntu.com/3931-2/Third Party Advisory
• https://www.debian.org/security/2018/dsa-4308Third Party Advisory
• https://xenbits.xen.org/xsa/advisory-274.htmlMitigation, Patch, Vendor Advisory

Published

Jul 28, 2018

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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