CVE Database›Document archive›CVE-2021-47375

CVE-2021-47375

kernel: blktrace: Fix uaf in blk_trace access after removing by sysfs

Loading…

Severity

Moderate

Red Hat Product Security

5.6

CVSS 3.1

Review impact separately from score.

Published · May 21, 2024

Updated · February 2, 2026

Description

A vulnerability was found in the Linux kernel's blktrace system, caused durning the blktrace feature is used to monitor block device activities and a trace is removed, where the kernel is causing improperly management of memory leading to potential crashes.

Statement

This vulnerability is rated as a moderate severity because it can cause system crashes due to improper memory access, but it does not allows an attacker to directly compromise system security or access sensitive data.

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

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.6
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H

CWE-416 · Use After Free