CVE-2018-1087

CVE Details

Release Date:

2018-07-30

Description

kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel's KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest.

See more information about CVE-2018-1087 from MITRE CVE dictionary and NIST NVD

CVSS v2.0 metrics

NOTE: The following CVSS v2.0 metrics and score provided are preliminary and subject to review.

Base Score:	4.6	Base Metrics:	AV:L/AC:L/Au:N/C:P/I:P/A:P
Access Vector:	Local network	Attack Complexity:	Low
Authentication:	None required	Confidentiality Impact:	Partial
Integrity Impact:	Partial	Availability Impact:	Partial

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (kernel-uek)	ELSA-2018-4096	2018-05-08
Oracle Linux version 7 (kernel)	ELSA-2018-1318	2018-05-09
Oracle Linux version 7 (kernel-uek)	ELSA-2018-4096	2018-05-08
Oracle VM version 3.4 (kernel-uek)	OVMSA-2018-0040	2018-05-08

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team