CVE-2025-38427

kernel: Linux kernel: Denial of Service due to invalid I/O memory access via PCI framebuffer relocation

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · July 25, 2025

Updated · June 30, 2026

Description

A flaw was found in the Linux kernel. This vulnerability arises from incorrect handling of framebuffer memory ranges within the screen_info structure when PCI host-bridge window offsets are applied. A local user with low privileges could exploit this to cause invalid access to input/output (I/O) memory. This could lead to a system crash, resulting in 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-386 · Symbolic Name not Mapping to Correct Object