CVE-2023-31085

kernel: divide-by-zero error in ctrl_cdev_ioctl when do_div happens and erasesize is 0

Loading…

Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · April 18, 2023

Updated · October 15, 2026

Description

A divide-by-zero flaw was found in the Linux kernel’s UBI (a software layer above the MTD layer that admits the use of LVM-like logical volumes on top of MTD devices). This flaw allows a local user to crash the system.

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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE not specified