CVE-2019-18683

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.

CVSS v3.1

7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

6.9 MEDIUMAV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS

0.98% chance of exploitation in the next 30 days, 60th percentile

Published

2019-11-04

Updated

2024-08-05

Proof-of-concept exploits (4)

• http://www.openwall.com/lists/oss-security/2019/11/05/1
• https://www.openwall.com/lists/oss-security/2019/11/02/1
• Limesss/cve-2019-186831★ · 2022-11-13
• sanjana123-cloud/CVE-2019-186830★ · 2020-05-12

References

• CVE Record
• NVD entry

Related

• CVE-2023-36109
• CVE-2019-18680
• CVE-2019-18684
• CVE-2019-18675
• CVE-2019-18793
• CVE-2019-18665