CVE Database›Document archive›CVE-2020-27820

CVE-2020-27820

kernel: use-after-free in nouveau kernel module

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Severity

Low

Red Hat Product Security

4.1

CVSS 3.1

Review impact separately from score.

Published · November 3, 2020

Updated · June 28, 2026

Description

A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).

Statement

This flaw is rated as having a Low impact because the issue can only be triggered by an privileged local user (or user with physical access) as the issue only happens during unbinding the driver or removing the device.

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

To mitigate this issue, prevent the module nouveau from being loaded. Please see https://access.redhat.com/solutions/41278 for information on how to blacklist a kernel module to prevent it from loading automatically.

CVSS / CWE

CVSS 3.1 · 4.1
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-416 · Use After Free