#VU22567 Race condition in Linux kernel - CVE-2019-18683
Published: November 6, 2019 / Updated: December 25, 2019
Vulnerability identifier: #VU22567
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-18683
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition, caused by wrong mutex locking in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out(), sdr_cap_stop_streaming(), and the corresponding kthreads. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
Successful exploitation of the vulnerability requires access to /dev/video0.
Remediation
Install updates from vendor's website.