CVE-2019-18683

Severity CVSS v4.0:

Pending analysis

Type:

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Publication date:

04/11/2019

Last modified:

07/06/2024

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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.00 HIGH
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.00

Severity 3.x

HIGH

Vector 2.0

AV:L/AC:M/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 6.90 MEDIUM
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0

6.90

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	3.18 (including)	4.4.204 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.5 (including)	4.9.204 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.10 (including)	4.14.157 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.87 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.3.14 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.4 (including)	5.4.1 (excluding)
cpe:2.3:o:canonical:ubuntu_linux:14.04::::esm:::
cpe:2.3:o:canonical:ubuntu_linux:16.04::::esm:::
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:19.10:::::::*
cpe:2.3:o:opensuse:leap:15.1:::::::*
cpe:2.3:a:netapp:active_iq_unified_manager:-:::::vmware_vsphere::
cpe:2.3:a:netapp:cloud_backup:-:::::::*
cpe:2.3:a:netapp:data_availability_services:-:::::::*
cpe:2.3:a:netapp:e-series_santricity_os_controller::::::::	11.0.0 (including)	11.70.1 (including)

To consult the complete list of CPE names with products and versions, see this page

CVE-2019-18683

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools