CVEvulnerability

CVE-2023-53389

5.5 MEDIUM Published 2025-09-18 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2025-09-18
Last modified
2026-06-17
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: dp: Only trigger DRM HPD events if bridge is attached The MediaTek DisplayPort interface bridge driver starts its interrupts as soon as its probed. However when the interrupts trigger the bridge might not have been attached to a DRM device. As drm_helper_hpd_irq_event() does not check whether the passed in drm_device is valid or not, a NULL pointer passed in results in a kernel NULL pointer dereference in it. Check whether the bridge is attached and only trigger an HPD event if it is.

Affected configurations

• linux linux kernel (>= 6.1 < 6.1.28) • linux linux kernel (>= 6.2 < 6.2.15) • linux linux kernel (>= 6.3 < 6.3.2)

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References