CVEvulnerability

CVE-2018-14678

7.8 HIGH Published 2018-07-28 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-07-28
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-665

Description

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.

Affected configurations

• linux linux kernel (>= 4.14.21 < 4.14.61) • linux linux kernel (>= 4.15.5 < 4.17.13) • xen xen (<= 4.11.0) • debian debian linux 8.0 • debian debian linux 9.0 • canonical ubuntu linux 14.04 • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04

Related

Weakness · CWE (1)

  • CWE-665 Improper Initialization weakness

References