CVE-2023-52458
kernel: block: null pointer dereference in ioctl.c when length and logical block size are misaligned
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · February 23, 2024
Updated · November 21, 2025
Description
A flaw was found in the Linux kernel's block subsystem, where a NULL pointer dereference occurs if partitions are created or resized with a size that is not a multiple of the logical block size. This flaw allows a privileged attacker to cause a denial of service.
Statement
The impact of this vulnerability is considered Low because the affected code requires system administration privileges to exploit.
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 currently available for this vulnerability. Make sure to perform the updates as they become available.
CVSS / CWE
CVSS 3.1 · 4.2CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference