CVE-2025-21780

kernel: drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table()

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Severity

Important

Red Hat Product Security

7.8

CVSS 3.1

Review impact separately from score.

Published · February 27, 2025

Updated · September 13, 2026

Description

A flaw was found in the Linux kernel's drm/amdgpu component. A malicious local user could exploit this by providing a small powerplay table (pptable) through sysfs and then a larger one. This can lead to a buffer overflow in the smu_sys_set_pp_table() function, potentially allowing for privilege escalation or arbitrary code execution.

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 · 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')