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CVE-2026-89822

kernel: drm/i915: Guard against NULL driver_data in i915_pci_probe()

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 16, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel's drm/i915 module. A local user could exploit a null pointer dereference in the i915_pci_probe() function. This occurs when a device is force-bound via sysfs driver_override, causing driver_data to be NULL and subsequently dereferenced. Successful exploitation could lead to a system crash, resulting in a Denial of Service (DoS).

Statement

This vulnerability is rated as having a Low impact for Red Hat Enterprise Linux because exploitation requires local privileged access to manipulate device driver bindings via sysfs, limiting the blast radius to a localized denial of service. Standard enterprise server deployments typically operate headless and do not manually force-bind unmatching PCI devices to graphics drivers via sysfs overrides. Consequently, typical production environments face minimal operational risk unless privileged administrative interfaces are misconfigured or abused.

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-476 · NULL Pointer Dereference