CVE Database›Document archive›CVE-2021-47351

CVE-2021-47351

kernel: ubifs: Fix races between xattr_{set|get} and listxattr operations

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Severity

Moderate

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · May 21, 2024

Updated · August 5, 2026

Description

A vulnerability was found in the Linux kernel's UBIFS file system, where concurrent operations to set or get extended attributes (xattrs) and list xattrs could lead to assertion failures or memory corruption. This problem arises because the system does not properly handle simultaneous read and write requests, potentially causing stale xattr values or other inconsistencies.

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

Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

CVSS / CWE

CVSS 3.1 · 4.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

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