CVE-2021-20321

Updated: 2026-02-27 00:13:30.384874

Description:

A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x MEDIUM 4.7
CVSS Version 3.x MEDIUM 4.7

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

Ubuntu 18.04 ELS linux 4.15.0 4.7 MEDIUM Ignored 2023-03-02 04:04:07 Ignored due to low severity
Total: 11