CVE Vulnerabilities

CVE-2020-9939

Time-of-check Time-of-use (TOCTOU) Race Condition

Published: Oct 22, 2020 | Modified: Nov 21, 2024
CVSS 3.x
6.4
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
4.4 MEDIUM
AV:L/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

This issue was addressed with improved checks. This issue is fixed in macOS Catalina 10.15.6. A local user may be able to load unsigned kernel extensions.

Weakness

The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check.

Affected Software

Name Vendor Start Version End Version
Mac_os_x Apple * 10.15.6 (excluding)

Potential Mitigations

References