What’s Vulnerable › Vulnerabilities

CVE-2019-18683

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-11-04 · updated 2026-06-17
• Weakness: CWE-362

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.

Affected products

• Brocade Fabric OS: all versions
• Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 19.10
• Debian Linux: 8.0
• Linux kernel: from 3.18 before 4.4.204; from 4.5 before 4.9.204; from 4.10 before 4.14.157; from 4.15 before 4.19.87; from 4.20 before 5.3.14; from 5.4 before 5.4.1 — fixed in 4.14.157, 4.19.87, 4.4.204, 4.9.204, 5.3.14, 5.4.1
• NetApp 8300 Firmware: all versions
• NetApp 8700 Firmware: all versions
• NetApp A400 Firmware: all versions
• NetApp A700S Firmware: all versions
• Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
• NetApp Cloud Backup: all versions
• NetApp Data Availability Services: all versions
• E-Series SANtricity OS Controller Software 11.x: from 11.0.0 through 11.70.1
• NetApp Element Software: all versions
• NetApp H610S Firmware: all versions
• NetApp Hci Management Node: all versions
• NetApp Solidfire: all versions
• NetApp Steelstore Cloud Integrated Storage: all versions
• openSUSE Leap: 15.1

How to fix

Upgrade to a fixed version: Linux kernel 4.14.157, 4.19.87, 4.4.204, 4.9.204. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
• http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
• http://www.openwall.com/lists/oss-security/2019/11/05/1
• https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
• https://lore.kernel.org/lkml/20191103221719.27118-1-alex.popov%40linux.com/
• https://seclists.org/bugtraq/2020/Jan/10
• https://security.netapp.com/advisory/ntap-20191205-0001/
• https://usn.ubuntu.com/4254-1/
• https://usn.ubuntu.com/4254-2/
• https://usn.ubuntu.com/4258-1/
• https://usn.ubuntu.com/4284-1/
• https://usn.ubuntu.com/4287-1/

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