CVE-2021-47189
kernel: btrfs: fix memory ordering between normal and ordered work functions
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 10, 2024
Updated · August 28, 2026
Description
A memory ordering flaw was found in the btrfs file system code in the Linux kernel, which could lead to unpredictable behavior or security risks. The vulnerability is due to improper synchronization between normal and ordered work functions.
Statement
Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')