Published: 28/07/2018 Updated: 24/02/2023

CVSS v2 Base Score: 7.2 | Impact Score: 10 | Exploitability Score: 3.9

CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8

VMScore: 641

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

An issue exists in the Linux kernel up to and including 4.17.11, as used in Xen up to and including 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.

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linux linux kernel
xen xen
debian debian linux 8.0
debian debian linux 9.0
canonical ubuntu linux 18.04
canonical ubuntu linux 14.04
canonical ubuntu linux 16.04

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks CVE-2018-6554 A memory leak in the irda_bind function in the irda subsystem was discovered A local user can take advantage of this flaw to cause a denial of service (memory consumption) CVE ...

Several security issues were fixed in the Linux kernel ...

An issue was discovered in the Linux kernel through 41711, as used in Xen through 411x The xen_failsafe_callback entry point in arch/x86/entry/entry_64S 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 ...

CWE-665 https://xenbits.xen.org/xsa/advisory-274.html http://www.securitytracker.com/id/1041397 http://www.securityfocus.com/bid/104924 https://www.debian.org/security/2018/dsa-4308 https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html https://usn.ubuntu.com/3931-2/https://usn.ubuntu.com/3931-1/https://nvd.nist.gov https://www.debian.org/security/./dsa-4308 https://usn.ubuntu.com/3931-2/

CVE-2018-14678

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