CVE-2023-53389

MEDIUM EPSS 3.3%
Published Sep 18, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 18, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
3.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥6.1  –  <6.1.28
linuxlinux_kernel*≥6.2  –  <6.2.15
linuxlinux_kernel*≥6.3  –  <6.3.2

References 4

  • git.kernel.org https://git.kernel.org/stable/c/3551789d0635dfb2df8ab8e7fdbf0647e9c1724c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/36b617f7e4ae663fcadd202ea061ca695ca75539
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6524d3d58797975cc40b85be1e9b89721b4e8d0b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d1c04e338016ae2517c641806a831b1f3eee2bed
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3551789d0635dfb2df8ab8e7fdbf0647e9c1724c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/36b617f7e4ae663fcadd202ea061ca695ca75539
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6524d3d58797975cc40b85be1e9b89721b4e8d0b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d1c04e338016ae2517c641806a831b1f3eee2bed
    Patch