CVE-2021-40490
kernel: race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 3, 2021
Updated · August 14, 2026
Description
A flaw was found in the Linux kernel. A race condition was discovered in the ext4 subsystem. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Statement
The issue is actual only if inline_data enabled for the ext4 partition, and by default it is disabled.
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 don't 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 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')