CVE-2018-14678
HIGHLinux Kernel 4.14.21-4.14.61 - Denial of Service via Xen Failsafe Callback
Title source: llmDescription
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.
References (7)
Core 7
Core References
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1041397
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
Mitigation, Patch, Vendor Advisory x_refsource_misc
https://xenbits.xen.org/xsa/advisory-274.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/104924
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2018/dsa-4308
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3931-1/
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3931-2/
Scores
CVSS v3
7.8
EPSS
0.0008
EPSS Percentile
23.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-665
Status
published
Products (7)
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
18.04
debian/debian_linux
8.0
debian/debian_linux
9.0
linux/linux_kernel
4.14.21 - 4.14.61
xen/xen
< 4.11.0
Published
Jul 28, 2018
Tracked Since
Feb 18, 2026