CVE-2026-98886

kernel: drm/gma500: return errors from Oaktrail HDMI I2C reads

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · October 23, 2026

Updated · October 26, 2026

Description

A flaw was found in the Linux kernel's gma500 graphics driver. This vulnerability can lead to a Denial of Service (DoS) when communicating over the display interface. Specifically, the driver ignores timeout and interruption signals while waiting for an HDMI (High-Definition Multimedia Interface) I2C transfer to complete. A local user could trigger an incomplete read operation, causing the kernel to enter an infinite loop and hang the system.

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-835 · Loop with Unreachable Exit Condition ('Infinite Loop')