CVE-2018-19407

MEDIUM

Linux Kernel < 4.19.2 - Denial of Service via vcpu_scan_ioapic NULL Pointer Dereference

Title source: llm
STIX 2.1

Description

The vcpu_scan_ioapic function in arch/x86/kvm/x86.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a situation where ioapic is uninitialized.

References (12)

Core 12
Core References
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3879-2/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3872-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3878-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3879-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3871-5/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3878-2/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3871-4/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/105987
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3871-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3871-3/
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
Patch, Third Party Advisory x_refsource_misc
https://lkml.org/lkml/2018/11/20/580

Scores

CVSS v3 5.5
EPSS 0.0008
EPSS Percentile 23.9%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-476
Status published
Products (5)
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 18.10
linux/linux_kernel < 4.19.2
Published Nov 21, 2018
Tracked Since Feb 18, 2026