CVE-2026-46161

kernel: md/raid10: fix divide-by-zero in setup_geo() with zero far_copies

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · May 28, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel's md/raid10 module. This vulnerability allows a local user to trigger a divide-by-zero error within the setup_geo() function by supplying a malformed layout parameter where the far_copies value is set to zero. Successful exploitation of this flaw can lead to a system crash, causing a Denial of Service (DoS).

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-369 · Divide By Zero