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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2018-07-28T18:00:00

Updated: 2024-08-05T09:38:13.045Z

Reserved: 2018-07-28T00:00:00

Link: CVE-2018-14678

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2018-07-28T18:29:00.243

Modified: 2023-02-24T18:35:08.140

Link: CVE-2018-14678

cve-icon Redhat

Severity : Moderate

Publid Date: 2018-07-25T00:00:00Z

Links: CVE-2018-14678 - Bugzilla