CVE-2021-47375
kernel: blktrace: Fix uaf in blk_trace access after removing by sysfs
Severity
ModerateRed Hat Product Security
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 · 5.6CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H
CWE-416 · Use After Free