CVE-2026-98833

kernel: mtd: core: call _get_device() with the master MTD

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · October 18, 2026

Updated · October 24, 2026

Description

A flaw was found in the Linux kernel's Memory Technology Device (MTD) subsystem. When accessing certain partitions, the kernel improperly passes a partition device reference instead of the master device structure to the driver callback. A local user could exploit this flaw during device access operations to cause invalid memory references, resulting in a system crash and 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-843 · Access of Resource Using Incompatible Type ('Type Confusion')