CVE-2019-18683

Published Nov 4, 2019

Last updated 5 months ago

Overview

Description
An issue was discovered in drivers/media/platform/vivid in the Linux kernel through 5.3.8. It is exploitable for privilege escalation on some Linux distributions where local users have /dev/video0 access, but only if the driver happens to be loaded. There are multiple race conditions during streaming stopping in this driver (part of the V4L2 subsystem). These issues are caused by wrong mutex locking in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out(), sdr_cap_stop_streaming(), and the corresponding kthreads. At least one of these race conditions leads to a use-after-free.
Source
cve@mitre.org
NVD status
Analyzed

Risk scores

CVSS 3.1

Type
Primary
Base score
7
Impact score
5.9
Exploitability score
1
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

CVSS 2.0

Type
Primary
Base score
6.9
Impact score
10
Exploitability score
3.4
Vector string
AV:L/AC:M/Au:N/C:C/I:C/A:C

Weaknesses

nvd@nist.gov
CWE-362

Social media

Hype score
Not currently trending

Configurations